./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/mutex-meet/safe024_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.i ./goblint.2024-05-07_14-17-48.files/mutex-meet/safe024_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 10:41:17,422 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 10:41:17,485 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 10:41:17,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 10:41:17,491 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 10:41:17,513 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 10:41:17,513 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 10:41:17,514 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 10:41:17,514 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 10:41:17,517 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 10:41:17,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 10:41:17,518 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 10:41:17,519 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 10:41:17,520 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 10:41:17,520 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 10:41:17,520 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 10:41:17,521 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 10:41:17,521 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 10:41:17,521 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 10:41:17,521 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 10:41:17,522 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 10:41:17,522 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 10:41:17,522 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 10:41:17,522 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 10:41:17,523 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 10:41:17,523 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 10:41:17,523 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 10:41:17,523 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 10:41:17,524 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 10:41:17,524 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 10:41:17,525 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 10:41:17,525 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 10:41:17,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:41:17,525 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 10:41:17,525 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 10:41:17,526 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 10:41:17,526 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 10:41:17,526 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 10:41:17,526 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 10:41:17,526 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 10:41:17,527 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 10:41:17,527 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 10:41:17,527 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 10:41:17,527 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 10:41:17,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 10:41:17,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 10:41:17,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 10:41:17,768 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 10:41:17,768 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 10:41:17,769 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/safe024_tso.yml/witness.yml [2024-05-12 10:41:17,891 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 10:41:17,891 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 10:41:17,892 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.i [2024-05-12 10:41:18,897 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 10:41:19,130 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 10:41:19,130 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.i [2024-05-12 10:41:19,142 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d24ea8f5/450ad13ce23544c28c1229699327b2ab/FLAG4a28cd37e [2024-05-12 10:41:19,154 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d24ea8f5/450ad13ce23544c28c1229699327b2ab [2024-05-12 10:41:19,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 10:41:19,155 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 10:41:19,157 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 10:41:19,158 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 10:41:19,161 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 10:41:19,162 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:41:17" (1/2) ... [2024-05-12 10:41:19,163 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6f2ee0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:41:19, skipping insertion in model container [2024-05-12 10:41:19,163 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:41:17" (1/2) ... [2024-05-12 10:41:19,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@49fd6a1c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:41:19, skipping insertion in model container [2024-05-12 10:41:19,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:41:19" (2/2) ... [2024-05-12 10:41:19,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6f2ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:41:19, skipping insertion in model container [2024-05-12 10:41:19,165 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:41:19" (2/2) ... [2024-05-12 10:41:19,166 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 10:41:19,233 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 10:41:19,234 INFO L97 edCorrectnessWitness]: Location invariant before [L787-L787] ((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p2_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )z >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p2_EBX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )__unbuffered_p2_EBX >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )z >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )z >= 0LL) && (long long )y + (long long )z >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )z >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )z >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )z >= 0LL) && (1LL + (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )z >= 0LL) && (1LL + (long long )x) - (long long )z >= 0LL) && (1LL + (long long )y) - (long long )z >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p2_EAX) && 0 <= __unbuffered_p2_EBX) && 0 <= x) && 0 <= y) && 0 <= z) && __unbuffered_p0_EAX <= 1) && __unbuffered_p2_EAX <= 1) && __unbuffered_p2_EBX <= 1) && x <= 1) && y <= 1) && z <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) [2024-05-12 10:41:19,234 INFO L97 edCorrectnessWitness]: Location invariant before [L788-L788] ((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p2_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )z >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p2_EBX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )__unbuffered_p2_EBX >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )z >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )z >= 0LL) && (long long )y + (long long )z >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )z >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )z >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )z >= 0LL) && (1LL + (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )z >= 0LL) && (1LL + (long long )x) - (long long )z >= 0LL) && (1LL + (long long )y) - (long long )z >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p2_EAX) && 0 <= __unbuffered_p2_EBX) && 0 <= x) && 0 <= y) && 0 <= z) && __unbuffered_p0_EAX <= 1) && __unbuffered_p2_EAX <= 1) && __unbuffered_p2_EBX <= 1) && x <= 1) && y <= 1) && z <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) [2024-05-12 10:41:19,234 INFO L97 edCorrectnessWitness]: Location invariant before [L785-L785] ((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p2_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )z >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p2_EBX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )__unbuffered_p2_EBX >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )z >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )z >= 0LL) && (long long )y + (long long )z >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )z >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )z >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )z >= 0LL) && (1LL + (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )z >= 0LL) && (1LL + (long long )x) - (long long )z >= 0LL) && (1LL + (long long )y) - (long long )z >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p2_EAX) && 0 <= __unbuffered_p2_EBX) && 0 <= x) && 0 <= y) && 0 <= z) && __unbuffered_p0_EAX <= 1) && __unbuffered_p2_EAX <= 1) && __unbuffered_p2_EBX <= 1) && x <= 1) && y <= 1) && z <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) [2024-05-12 10:41:19,235 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 10:41:19,235 INFO L106 edCorrectnessWitness]: ghost_update [L783-L783] multithreaded = 1; [2024-05-12 10:41:19,276 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 10:41:19,467 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.i[945,958] [2024-05-12 10:41:19,576 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:41:19,586 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 10:41:19,612 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 10:41:19,703 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:41:19,735 INFO L206 MainTranslator]: Completed translation [2024-05-12 10:41:19,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:41:19 WrapperNode [2024-05-12 10:41:19,735 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 10:41:19,736 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 10:41:19,736 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 10:41:19,736 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 10:41:19,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:41:19" (1/1) ... [2024-05-12 10:41:19,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:41:19" (1/1) ... [2024-05-12 10:41:19,782 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2024-05-12 10:41:19,783 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 10:41:19,783 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 10:41:19,783 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 10:41:19,784 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 10:41:19,793 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:41:19" (1/1) ... [2024-05-12 10:41:19,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:41:19" (1/1) ... [2024-05-12 10:41:19,796 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:41:19" (1/1) ... [2024-05-12 10:41:19,810 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-05-12 10:41:19,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:41:19" (1/1) ... [2024-05-12 10:41:19,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:41:19" (1/1) ... [2024-05-12 10:41:19,816 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:41:19" (1/1) ... [2024-05-12 10:41:19,818 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:41:19" (1/1) ... [2024-05-12 10:41:19,820 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:41:19" (1/1) ... [2024-05-12 10:41:19,821 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:41:19" (1/1) ... [2024-05-12 10:41:19,824 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 10:41:19,825 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 10:41:19,825 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 10:41:19,825 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 10:41:19,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:41:19" (1/1) ... [2024-05-12 10:41:19,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:41:19,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:41:19,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-05-12 10:41:19,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-05-12 10:41:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 10:41:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 10:41:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 10:41:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 10:41:19,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 10:41:19,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 10:41:19,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 10:41:19,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 10:41:19,901 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 10:41:19,902 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 10:41:19,902 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 10:41:19,902 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 10:41:19,902 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 10:41:19,903 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 10:41:19,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 10:41:19,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 10:41:19,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 10:41:19,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 10:41:19,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 10:41:19,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 10:41:19,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 10:41:19,907 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 10:41:20,027 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 10:41:20,028 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 10:41:20,278 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 10:41:20,278 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 10:41:20,352 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 10:41:20,352 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 10:41:20,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:41:20 BoogieIcfgContainer [2024-05-12 10:41:20,352 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 10:41:20,354 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 10:41:20,354 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 10:41:20,356 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 10:41:20,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:41:17" (1/4) ... [2024-05-12 10:41:20,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a3fb86 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 10:41:20, skipping insertion in model container [2024-05-12 10:41:20,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 10:41:19" (2/4) ... [2024-05-12 10:41:20,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a3fb86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:41:20, skipping insertion in model container [2024-05-12 10:41:20,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:41:19" (3/4) ... [2024-05-12 10:41:20,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a3fb86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:41:20, skipping insertion in model container [2024-05-12 10:41:20,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:41:20" (4/4) ... [2024-05-12 10:41:20,359 INFO L112 eAbstractionObserver]: Analyzing ICFG safe024_tso.i [2024-05-12 10:41:20,373 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 10:41:20,373 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 10:41:20,373 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 10:41:20,438 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 10:41:20,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-05-12 10:41:20,502 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-05-12 10:41:20,503 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:41:20,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-05-12 10:41:20,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-05-12 10:41:20,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 41 transitions, 91 flow [2024-05-12 10:41:20,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 10:41:20,529 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@74004093, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 10:41:20,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-05-12 10:41:20,536 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 10:41:20,536 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 10:41:20,536 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:41:20,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:20,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 10:41:20,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:20,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:20,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1727853625, now seen corresponding path program 1 times [2024-05-12 10:41:20,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:20,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895169633] [2024-05-12 10:41:20,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:20,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:21,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:21,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:21,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895169633] [2024-05-12 10:41:21,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895169633] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:21,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:21,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 10:41:21,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855039717] [2024-05-12 10:41:21,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:21,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:41:21,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:21,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:41:21,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:41:21,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-05-12 10:41:21,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:21,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:21,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-05-12 10:41:21,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:21,645 INFO L124 PetriNetUnfolderBase]: 736/1279 cut-off events. [2024-05-12 10:41:21,645 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-05-12 10:41:21,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2466 conditions, 1279 events. 736/1279 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7060 event pairs, 509 based on Foata normal form. 1/1222 useless extension candidates. Maximal degree in co-relation 2451. Up to 1120 conditions per place. [2024-05-12 10:41:21,658 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 33 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2024-05-12 10:41:21,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 195 flow [2024-05-12 10:41:21,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:41:21,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:41:21,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-05-12 10:41:21,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7092198581560284 [2024-05-12 10:41:21,670 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 91 flow. Second operand 3 states and 100 transitions. [2024-05-12 10:41:21,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 195 flow [2024-05-12 10:41:21,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 53 transitions, 190 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 10:41:21,675 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 118 flow [2024-05-12 10:41:21,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-05-12 10:41:21,680 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-05-12 10:41:21,680 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 118 flow [2024-05-12 10:41:21,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:21,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:21,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:21,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 10:41:21,682 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:21,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:21,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1685053158, now seen corresponding path program 1 times [2024-05-12 10:41:21,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:21,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584195149] [2024-05-12 10:41:21,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:21,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:22,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:22,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:22,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584195149] [2024-05-12 10:41:22,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584195149] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:22,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:22,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 10:41:22,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369467985] [2024-05-12 10:41:22,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:22,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:41:22,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:22,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:41:22,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:41:22,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-05-12 10:41:22,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:22,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:22,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-05-12 10:41:22,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:22,305 INFO L124 PetriNetUnfolderBase]: 962/1579 cut-off events. [2024-05-12 10:41:22,305 INFO L125 PetriNetUnfolderBase]: For 313/347 co-relation queries the response was YES. [2024-05-12 10:41:22,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3524 conditions, 1579 events. 962/1579 cut-off events. For 313/347 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8745 event pairs, 457 based on Foata normal form. 3/1545 useless extension candidates. Maximal degree in co-relation 3509. Up to 1423 conditions per place. [2024-05-12 10:41:22,314 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 46 selfloop transitions, 7 changer transitions 0/68 dead transitions. [2024-05-12 10:41:22,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 288 flow [2024-05-12 10:41:22,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:41:22,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:41:22,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-05-12 10:41:22,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6861702127659575 [2024-05-12 10:41:22,320 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 118 flow. Second operand 4 states and 129 transitions. [2024-05-12 10:41:22,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 288 flow [2024-05-12 10:41:22,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 68 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 10:41:22,324 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 170 flow [2024-05-12 10:41:22,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-05-12 10:41:22,329 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-05-12 10:41:22,329 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 170 flow [2024-05-12 10:41:22,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:22,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:22,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:22,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 10:41:22,330 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:22,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:22,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1197472498, now seen corresponding path program 1 times [2024-05-12 10:41:22,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:22,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242728274] [2024-05-12 10:41:22,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:22,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:22,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:22,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:22,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242728274] [2024-05-12 10:41:22,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242728274] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:22,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:22,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 10:41:22,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131968573] [2024-05-12 10:41:22,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:22,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:41:22,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:22,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:41:22,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:41:22,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-05-12 10:41:22,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:22,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:22,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-05-12 10:41:22,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:23,003 INFO L124 PetriNetUnfolderBase]: 1077/1883 cut-off events. [2024-05-12 10:41:23,003 INFO L125 PetriNetUnfolderBase]: For 875/978 co-relation queries the response was YES. [2024-05-12 10:41:23,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4480 conditions, 1883 events. 1077/1883 cut-off events. For 875/978 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11098 event pairs, 638 based on Foata normal form. 2/1812 useless extension candidates. Maximal degree in co-relation 4462. Up to 1600 conditions per place. [2024-05-12 10:41:23,014 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 42 selfloop transitions, 9 changer transitions 0/68 dead transitions. [2024-05-12 10:41:23,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 318 flow [2024-05-12 10:41:23,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:41:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:41:23,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-05-12 10:41:23,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6648936170212766 [2024-05-12 10:41:23,016 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 170 flow. Second operand 4 states and 125 transitions. [2024-05-12 10:41:23,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 318 flow [2024-05-12 10:41:23,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 316 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-05-12 10:41:23,018 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 211 flow [2024-05-12 10:41:23,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-05-12 10:41:23,019 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2024-05-12 10:41:23,019 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 211 flow [2024-05-12 10:41:23,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:23,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:23,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:23,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 10:41:23,020 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:23,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:23,021 INFO L85 PathProgramCache]: Analyzing trace with hash -594429660, now seen corresponding path program 1 times [2024-05-12 10:41:23,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:23,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212302087] [2024-05-12 10:41:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:23,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:23,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:23,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:23,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212302087] [2024-05-12 10:41:23,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212302087] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:23,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:23,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:41:23,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149399141] [2024-05-12 10:41:23,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:23,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:41:23,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:23,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:41:23,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:41:23,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:41:23,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 211 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:23,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:23,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:41:23,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:23,848 INFO L124 PetriNetUnfolderBase]: 1214/2158 cut-off events. [2024-05-12 10:41:23,848 INFO L125 PetriNetUnfolderBase]: For 1701/1711 co-relation queries the response was YES. [2024-05-12 10:41:23,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5527 conditions, 2158 events. 1214/2158 cut-off events. For 1701/1711 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12763 event pairs, 479 based on Foata normal form. 12/2134 useless extension candidates. Maximal degree in co-relation 5506. Up to 1730 conditions per place. [2024-05-12 10:41:23,864 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 65 selfloop transitions, 12 changer transitions 0/91 dead transitions. [2024-05-12 10:41:23,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 91 transitions, 463 flow [2024-05-12 10:41:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:41:23,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:41:23,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-05-12 10:41:23,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6453900709219859 [2024-05-12 10:41:23,867 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 211 flow. Second operand 6 states and 182 transitions. [2024-05-12 10:41:23,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 91 transitions, 463 flow [2024-05-12 10:41:23,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 91 transitions, 446 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-05-12 10:41:23,873 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 251 flow [2024-05-12 10:41:23,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=251, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-05-12 10:41:23,874 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2024-05-12 10:41:23,874 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 251 flow [2024-05-12 10:41:23,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:23,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:23,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:23,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 10:41:23,875 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:23,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:23,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1516078535, now seen corresponding path program 1 times [2024-05-12 10:41:23,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:23,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700622714] [2024-05-12 10:41:23,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:23,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:24,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:24,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700622714] [2024-05-12 10:41:24,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700622714] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:24,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:24,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:41:24,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460350970] [2024-05-12 10:41:24,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:24,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:41:24,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:24,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:41:24,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:41:24,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:41:24,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 251 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:24,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:24,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:41:24,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:24,572 INFO L124 PetriNetUnfolderBase]: 1289/2164 cut-off events. [2024-05-12 10:41:24,575 INFO L125 PetriNetUnfolderBase]: For 2780/2800 co-relation queries the response was YES. [2024-05-12 10:41:24,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6217 conditions, 2164 events. 1289/2164 cut-off events. For 2780/2800 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12613 event pairs, 462 based on Foata normal form. 2/2133 useless extension candidates. Maximal degree in co-relation 6194. Up to 1861 conditions per place. [2024-05-12 10:41:24,586 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 59 selfloop transitions, 10 changer transitions 0/87 dead transitions. [2024-05-12 10:41:24,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 87 transitions, 483 flow [2024-05-12 10:41:24,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:41:24,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:41:24,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-05-12 10:41:24,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6297872340425532 [2024-05-12 10:41:24,590 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 251 flow. Second operand 5 states and 148 transitions. [2024-05-12 10:41:24,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 87 transitions, 483 flow [2024-05-12 10:41:24,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 87 transitions, 454 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-05-12 10:41:24,594 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 316 flow [2024-05-12 10:41:24,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=316, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-05-12 10:41:24,596 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2024-05-12 10:41:24,596 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 316 flow [2024-05-12 10:41:24,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:24,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:24,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:24,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 10:41:24,597 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:24,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:24,598 INFO L85 PathProgramCache]: Analyzing trace with hash 290681191, now seen corresponding path program 1 times [2024-05-12 10:41:24,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:24,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093520980] [2024-05-12 10:41:24,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:24,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:25,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:25,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093520980] [2024-05-12 10:41:25,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093520980] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:25,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:25,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:41:25,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667750920] [2024-05-12 10:41:25,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:25,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:41:25,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:25,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:41:25,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:41:25,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:41:25,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:25,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:25,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:41:25,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:25,269 INFO L124 PetriNetUnfolderBase]: 1438/2440 cut-off events. [2024-05-12 10:41:25,269 INFO L125 PetriNetUnfolderBase]: For 3599/3616 co-relation queries the response was YES. [2024-05-12 10:41:25,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7328 conditions, 2440 events. 1438/2440 cut-off events. For 3599/3616 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 14154 event pairs, 503 based on Foata normal form. 14/2436 useless extension candidates. Maximal degree in co-relation 7302. Up to 2037 conditions per place. [2024-05-12 10:41:25,289 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 66 selfloop transitions, 18 changer transitions 0/101 dead transitions. [2024-05-12 10:41:25,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 101 transitions, 612 flow [2024-05-12 10:41:25,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:41:25,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:41:25,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-05-12 10:41:25,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-05-12 10:41:25,291 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 316 flow. Second operand 5 states and 155 transitions. [2024-05-12 10:41:25,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 101 transitions, 612 flow [2024-05-12 10:41:25,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 101 transitions, 608 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-05-12 10:41:25,298 INFO L231 Difference]: Finished difference. Result has 73 places, 75 transitions, 421 flow [2024-05-12 10:41:25,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=421, PETRI_PLACES=73, PETRI_TRANSITIONS=75} [2024-05-12 10:41:25,301 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 22 predicate places. [2024-05-12 10:41:25,301 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 75 transitions, 421 flow [2024-05-12 10:41:25,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:25,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:25,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:25,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 10:41:25,302 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:25,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:25,302 INFO L85 PathProgramCache]: Analyzing trace with hash 298068181, now seen corresponding path program 2 times [2024-05-12 10:41:25,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:25,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669483899] [2024-05-12 10:41:25,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:25,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:25,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:25,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669483899] [2024-05-12 10:41:25,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669483899] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:25,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:25,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:41:25,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877312540] [2024-05-12 10:41:25,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:25,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:41:25,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:25,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:41:25,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:41:25,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:41:25,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 75 transitions, 421 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:25,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:25,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:41:25,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:25,977 INFO L124 PetriNetUnfolderBase]: 1450/2351 cut-off events. [2024-05-12 10:41:25,978 INFO L125 PetriNetUnfolderBase]: For 5028/5047 co-relation queries the response was YES. [2024-05-12 10:41:25,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7979 conditions, 2351 events. 1450/2351 cut-off events. For 5028/5047 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 13344 event pairs, 428 based on Foata normal form. 14/2348 useless extension candidates. Maximal degree in co-relation 7949. Up to 2058 conditions per place. [2024-05-12 10:41:25,996 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 61 selfloop transitions, 18 changer transitions 0/96 dead transitions. [2024-05-12 10:41:25,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 96 transitions, 629 flow [2024-05-12 10:41:25,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:41:25,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:41:25,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-05-12 10:41:25,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-05-12 10:41:25,998 INFO L175 Difference]: Start difference. First operand has 73 places, 75 transitions, 421 flow. Second operand 5 states and 150 transitions. [2024-05-12 10:41:25,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 96 transitions, 629 flow [2024-05-12 10:41:26,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 96 transitions, 609 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-05-12 10:41:26,006 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 446 flow [2024-05-12 10:41:26,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2024-05-12 10:41:26,008 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 27 predicate places. [2024-05-12 10:41:26,008 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 446 flow [2024-05-12 10:41:26,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:26,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:26,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:26,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 10:41:26,009 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:26,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:26,009 INFO L85 PathProgramCache]: Analyzing trace with hash -923988024, now seen corresponding path program 1 times [2024-05-12 10:41:26,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:26,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177319009] [2024-05-12 10:41:26,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:26,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:26,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:26,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177319009] [2024-05-12 10:41:26,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177319009] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:26,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:26,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:41:26,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448617722] [2024-05-12 10:41:26,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:26,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:41:26,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:26,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:41:26,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:41:26,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:26,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:26,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:26,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:26,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:26,681 INFO L124 PetriNetUnfolderBase]: 1529/2475 cut-off events. [2024-05-12 10:41:26,681 INFO L125 PetriNetUnfolderBase]: For 5806/5809 co-relation queries the response was YES. [2024-05-12 10:41:26,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8270 conditions, 2475 events. 1529/2475 cut-off events. For 5806/5809 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14026 event pairs, 523 based on Foata normal form. 2/2465 useless extension candidates. Maximal degree in co-relation 8237. Up to 2147 conditions per place. [2024-05-12 10:41:26,699 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 87 selfloop transitions, 20 changer transitions 0/120 dead transitions. [2024-05-12 10:41:26,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 120 transitions, 842 flow [2024-05-12 10:41:26,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:41:26,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:41:26,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-05-12 10:41:26,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6347517730496454 [2024-05-12 10:41:26,700 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 446 flow. Second operand 6 states and 179 transitions. [2024-05-12 10:41:26,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 120 transitions, 842 flow [2024-05-12 10:41:26,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 120 transitions, 786 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 10:41:26,708 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 540 flow [2024-05-12 10:41:26,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=540, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2024-05-12 10:41:26,708 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 31 predicate places. [2024-05-12 10:41:26,709 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 540 flow [2024-05-12 10:41:26,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:26,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:26,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:26,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 10:41:26,709 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:26,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:26,710 INFO L85 PathProgramCache]: Analyzing trace with hash 650187638, now seen corresponding path program 2 times [2024-05-12 10:41:26,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:26,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483296042] [2024-05-12 10:41:26,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:26,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:27,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:27,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483296042] [2024-05-12 10:41:27,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483296042] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:27,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:27,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:41:27,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949667674] [2024-05-12 10:41:27,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:27,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:41:27,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:27,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:41:27,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:41:27,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:27,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 540 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:27,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:27,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:27,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:27,370 INFO L124 PetriNetUnfolderBase]: 1546/2527 cut-off events. [2024-05-12 10:41:27,370 INFO L125 PetriNetUnfolderBase]: For 7139/7139 co-relation queries the response was YES. [2024-05-12 10:41:27,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8939 conditions, 2527 events. 1546/2527 cut-off events. For 7139/7139 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 14448 event pairs, 646 based on Foata normal form. 2/2507 useless extension candidates. Maximal degree in co-relation 8904. Up to 2165 conditions per place. [2024-05-12 10:41:27,385 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 83 selfloop transitions, 26 changer transitions 0/122 dead transitions. [2024-05-12 10:41:27,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 122 transitions, 898 flow [2024-05-12 10:41:27,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:41:27,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:41:27,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-05-12 10:41:27,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6205673758865248 [2024-05-12 10:41:27,387 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 540 flow. Second operand 6 states and 175 transitions. [2024-05-12 10:41:27,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 122 transitions, 898 flow [2024-05-12 10:41:27,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 122 transitions, 864 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-05-12 10:41:27,395 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 618 flow [2024-05-12 10:41:27,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=618, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2024-05-12 10:41:27,395 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 36 predicate places. [2024-05-12 10:41:27,396 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 618 flow [2024-05-12 10:41:27,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:27,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:27,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:27,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 10:41:27,396 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:27,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:27,397 INFO L85 PathProgramCache]: Analyzing trace with hash 96067598, now seen corresponding path program 3 times [2024-05-12 10:41:27,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:27,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358383674] [2024-05-12 10:41:27,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:27,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:27,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:27,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:27,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358383674] [2024-05-12 10:41:27,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358383674] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:27,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:27,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:41:27,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453097753] [2024-05-12 10:41:27,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:27,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:41:27,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:27,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:41:27,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:41:27,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:27,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 618 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:27,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:27,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:27,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:28,045 INFO L124 PetriNetUnfolderBase]: 1541/2548 cut-off events. [2024-05-12 10:41:28,045 INFO L125 PetriNetUnfolderBase]: For 8092/8092 co-relation queries the response was YES. [2024-05-12 10:41:28,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9094 conditions, 2548 events. 1541/2548 cut-off events. For 8092/8092 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 14820 event pairs, 704 based on Foata normal form. 2/2521 useless extension candidates. Maximal degree in co-relation 9057. Up to 2160 conditions per place. [2024-05-12 10:41:28,062 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 82 selfloop transitions, 25 changer transitions 0/120 dead transitions. [2024-05-12 10:41:28,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 120 transitions, 896 flow [2024-05-12 10:41:28,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:41:28,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:41:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2024-05-12 10:41:28,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-05-12 10:41:28,064 INFO L175 Difference]: Start difference. First operand has 87 places, 93 transitions, 618 flow. Second operand 6 states and 174 transitions. [2024-05-12 10:41:28,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 120 transitions, 896 flow [2024-05-12 10:41:28,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 120 transitions, 868 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-05-12 10:41:28,074 INFO L231 Difference]: Finished difference. Result has 92 places, 93 transitions, 648 flow [2024-05-12 10:41:28,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=648, PETRI_PLACES=92, PETRI_TRANSITIONS=93} [2024-05-12 10:41:28,075 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 41 predicate places. [2024-05-12 10:41:28,075 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 93 transitions, 648 flow [2024-05-12 10:41:28,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:28,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:28,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:28,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 10:41:28,076 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:28,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:28,076 INFO L85 PathProgramCache]: Analyzing trace with hash 96344428, now seen corresponding path program 1 times [2024-05-12 10:41:28,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:28,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753515079] [2024-05-12 10:41:28,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:28,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:28,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:28,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753515079] [2024-05-12 10:41:28,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753515079] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:28,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:28,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:41:28,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437306690] [2024-05-12 10:41:28,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:28,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:41:28,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:28,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:41:28,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:41:28,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:41:28,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 648 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:28,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:28,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:41:28,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:28,750 INFO L124 PetriNetUnfolderBase]: 1396/2335 cut-off events. [2024-05-12 10:41:28,750 INFO L125 PetriNetUnfolderBase]: For 9852/9852 co-relation queries the response was YES. [2024-05-12 10:41:28,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8655 conditions, 2335 events. 1396/2335 cut-off events. For 9852/9852 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13552 event pairs, 412 based on Foata normal form. 4/2309 useless extension candidates. Maximal degree in co-relation 8616. Up to 1964 conditions per place. [2024-05-12 10:41:28,766 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 90 selfloop transitions, 12 changer transitions 0/123 dead transitions. [2024-05-12 10:41:28,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 123 transitions, 930 flow [2024-05-12 10:41:28,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:41:28,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:41:28,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-05-12 10:41:28,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6205673758865248 [2024-05-12 10:41:28,767 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 648 flow. Second operand 6 states and 175 transitions. [2024-05-12 10:41:28,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 123 transitions, 930 flow [2024-05-12 10:41:28,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 123 transitions, 880 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 10:41:28,816 INFO L231 Difference]: Finished difference. Result has 94 places, 95 transitions, 645 flow [2024-05-12 10:41:28,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=645, PETRI_PLACES=94, PETRI_TRANSITIONS=95} [2024-05-12 10:41:28,817 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 43 predicate places. [2024-05-12 10:41:28,817 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 95 transitions, 645 flow [2024-05-12 10:41:28,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:28,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:28,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:28,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 10:41:28,818 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:28,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:28,819 INFO L85 PathProgramCache]: Analyzing trace with hash -615913514, now seen corresponding path program 1 times [2024-05-12 10:41:28,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:28,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854996457] [2024-05-12 10:41:28,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:28,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:29,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:29,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854996457] [2024-05-12 10:41:29,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854996457] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:29,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:29,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:41:29,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551413193] [2024-05-12 10:41:29,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:29,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:41:29,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:29,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:41:29,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:41:29,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:41:29,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 95 transitions, 645 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:29,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:29,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:41:29,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:29,555 INFO L124 PetriNetUnfolderBase]: 1441/2355 cut-off events. [2024-05-12 10:41:29,555 INFO L125 PetriNetUnfolderBase]: For 11677/11718 co-relation queries the response was YES. [2024-05-12 10:41:29,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9094 conditions, 2355 events. 1441/2355 cut-off events. For 11677/11718 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13532 event pairs, 379 based on Foata normal form. 29/2309 useless extension candidates. Maximal degree in co-relation 9054. Up to 2016 conditions per place. [2024-05-12 10:41:29,570 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 90 selfloop transitions, 17 changer transitions 0/131 dead transitions. [2024-05-12 10:41:29,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 131 transitions, 957 flow [2024-05-12 10:41:29,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:41:29,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:41:29,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-05-12 10:41:29,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6418439716312057 [2024-05-12 10:41:29,571 INFO L175 Difference]: Start difference. First operand has 94 places, 95 transitions, 645 flow. Second operand 6 states and 181 transitions. [2024-05-12 10:41:29,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 131 transitions, 957 flow [2024-05-12 10:41:29,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 131 transitions, 928 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 10:41:29,582 INFO L231 Difference]: Finished difference. Result has 96 places, 98 transitions, 682 flow [2024-05-12 10:41:29,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=682, PETRI_PLACES=96, PETRI_TRANSITIONS=98} [2024-05-12 10:41:29,583 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 45 predicate places. [2024-05-12 10:41:29,583 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 682 flow [2024-05-12 10:41:29,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:29,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:29,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:29,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 10:41:29,583 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:29,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:29,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1795843218, now seen corresponding path program 2 times [2024-05-12 10:41:29,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:29,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300709190] [2024-05-12 10:41:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:29,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:29,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:29,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:29,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300709190] [2024-05-12 10:41:29,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300709190] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:29,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:29,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:41:29,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549102141] [2024-05-12 10:41:29,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:29,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:41:29,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:29,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:41:29,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:41:29,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:41:29,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 682 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:29,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:29,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:41:29,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:30,260 INFO L124 PetriNetUnfolderBase]: 1512/2556 cut-off events. [2024-05-12 10:41:30,260 INFO L125 PetriNetUnfolderBase]: For 14194/14226 co-relation queries the response was YES. [2024-05-12 10:41:30,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10083 conditions, 2556 events. 1512/2556 cut-off events. For 14194/14226 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 15168 event pairs, 472 based on Foata normal form. 24/2505 useless extension candidates. Maximal degree in co-relation 10042. Up to 2013 conditions per place. [2024-05-12 10:41:30,277 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 80 selfloop transitions, 32 changer transitions 0/136 dead transitions. [2024-05-12 10:41:30,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 136 transitions, 1078 flow [2024-05-12 10:41:30,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:41:30,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:41:30,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-05-12 10:41:30,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6524822695035462 [2024-05-12 10:41:30,279 INFO L175 Difference]: Start difference. First operand has 96 places, 98 transitions, 682 flow. Second operand 6 states and 184 transitions. [2024-05-12 10:41:30,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 136 transitions, 1078 flow [2024-05-12 10:41:30,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 136 transitions, 1036 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-05-12 10:41:30,291 INFO L231 Difference]: Finished difference. Result has 98 places, 104 transitions, 767 flow [2024-05-12 10:41:30,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=767, PETRI_PLACES=98, PETRI_TRANSITIONS=104} [2024-05-12 10:41:30,292 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 47 predicate places. [2024-05-12 10:41:30,292 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 104 transitions, 767 flow [2024-05-12 10:41:30,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:30,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:30,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:30,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 10:41:30,293 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:30,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:30,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1319256076, now seen corresponding path program 3 times [2024-05-12 10:41:30,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:30,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620586260] [2024-05-12 10:41:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:30,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:30,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:30,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620586260] [2024-05-12 10:41:30,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620586260] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:30,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:30,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:41:30,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064121473] [2024-05-12 10:41:30,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:30,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:41:30,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:30,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:41:30,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:41:30,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:41:30,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 104 transitions, 767 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:30,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:30,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:41:30,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:30,977 INFO L124 PetriNetUnfolderBase]: 1506/2469 cut-off events. [2024-05-12 10:41:30,977 INFO L125 PetriNetUnfolderBase]: For 16588/16615 co-relation queries the response was YES. [2024-05-12 10:41:30,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10467 conditions, 2469 events. 1506/2469 cut-off events. For 16588/16615 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 14525 event pairs, 407 based on Foata normal form. 18/2403 useless extension candidates. Maximal degree in co-relation 10425. Up to 2007 conditions per place. [2024-05-12 10:41:30,994 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 75 selfloop transitions, 32 changer transitions 0/131 dead transitions. [2024-05-12 10:41:30,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 131 transitions, 1045 flow [2024-05-12 10:41:30,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:41:30,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:41:30,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-05-12 10:41:30,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6347517730496454 [2024-05-12 10:41:30,996 INFO L175 Difference]: Start difference. First operand has 98 places, 104 transitions, 767 flow. Second operand 6 states and 179 transitions. [2024-05-12 10:41:30,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 131 transitions, 1045 flow [2024-05-12 10:41:31,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 131 transitions, 995 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-05-12 10:41:31,011 INFO L231 Difference]: Finished difference. Result has 102 places, 104 transitions, 790 flow [2024-05-12 10:41:31,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=790, PETRI_PLACES=102, PETRI_TRANSITIONS=104} [2024-05-12 10:41:31,012 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 51 predicate places. [2024-05-12 10:41:31,013 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 104 transitions, 790 flow [2024-05-12 10:41:31,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:31,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:31,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:31,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 10:41:31,013 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:31,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:31,014 INFO L85 PathProgramCache]: Analyzing trace with hash -488776247, now seen corresponding path program 1 times [2024-05-12 10:41:31,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:31,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101900437] [2024-05-12 10:41:31,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:31,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:31,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:31,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:31,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101900437] [2024-05-12 10:41:31,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101900437] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:31,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:31,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:41:31,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556355823] [2024-05-12 10:41:31,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:31,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:41:31,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:31,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:41:31,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:41:31,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:31,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 104 transitions, 790 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:31,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:31,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:31,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:31,732 INFO L124 PetriNetUnfolderBase]: 1598/2579 cut-off events. [2024-05-12 10:41:31,733 INFO L125 PetriNetUnfolderBase]: For 15956/15956 co-relation queries the response was YES. [2024-05-12 10:41:31,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10765 conditions, 2579 events. 1598/2579 cut-off events. For 15956/15956 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 14628 event pairs, 482 based on Foata normal form. 2/2572 useless extension candidates. Maximal degree in co-relation 10721. Up to 2285 conditions per place. [2024-05-12 10:41:31,754 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 123 selfloop transitions, 16 changer transitions 0/152 dead transitions. [2024-05-12 10:41:31,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 152 transitions, 1229 flow [2024-05-12 10:41:31,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:41:31,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:41:31,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-05-12 10:41:31,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6139817629179332 [2024-05-12 10:41:31,755 INFO L175 Difference]: Start difference. First operand has 102 places, 104 transitions, 790 flow. Second operand 7 states and 202 transitions. [2024-05-12 10:41:31,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 152 transitions, 1229 flow [2024-05-12 10:41:31,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 152 transitions, 1124 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-05-12 10:41:31,769 INFO L231 Difference]: Finished difference. Result has 105 places, 113 transitions, 814 flow [2024-05-12 10:41:31,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=814, PETRI_PLACES=105, PETRI_TRANSITIONS=113} [2024-05-12 10:41:31,770 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 54 predicate places. [2024-05-12 10:41:31,770 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 113 transitions, 814 flow [2024-05-12 10:41:31,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:31,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:31,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:31,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 10:41:31,770 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:31,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:31,771 INFO L85 PathProgramCache]: Analyzing trace with hash -643289077, now seen corresponding path program 2 times [2024-05-12 10:41:31,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:31,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741917943] [2024-05-12 10:41:31,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:31,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:32,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:32,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:32,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741917943] [2024-05-12 10:41:32,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741917943] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:32,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:32,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:41:32,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493952836] [2024-05-12 10:41:32,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:32,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:41:32,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:32,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:41:32,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:41:32,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:32,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 113 transitions, 814 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:32,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:32,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:32,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:32,455 INFO L124 PetriNetUnfolderBase]: 1637/2646 cut-off events. [2024-05-12 10:41:32,455 INFO L125 PetriNetUnfolderBase]: For 18318/18321 co-relation queries the response was YES. [2024-05-12 10:41:32,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11368 conditions, 2646 events. 1637/2646 cut-off events. For 18318/18321 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15085 event pairs, 428 based on Foata normal form. 2/2641 useless extension candidates. Maximal degree in co-relation 11322. Up to 2166 conditions per place. [2024-05-12 10:41:32,476 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 112 selfloop transitions, 42 changer transitions 0/167 dead transitions. [2024-05-12 10:41:32,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 167 transitions, 1442 flow [2024-05-12 10:41:32,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:41:32,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:41:32,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 210 transitions. [2024-05-12 10:41:32,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-05-12 10:41:32,478 INFO L175 Difference]: Start difference. First operand has 105 places, 113 transitions, 814 flow. Second operand 7 states and 210 transitions. [2024-05-12 10:41:32,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 167 transitions, 1442 flow [2024-05-12 10:41:32,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 167 transitions, 1396 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-05-12 10:41:32,496 INFO L231 Difference]: Finished difference. Result has 111 places, 126 transitions, 1000 flow [2024-05-12 10:41:32,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1000, PETRI_PLACES=111, PETRI_TRANSITIONS=126} [2024-05-12 10:41:32,497 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 60 predicate places. [2024-05-12 10:41:32,497 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 126 transitions, 1000 flow [2024-05-12 10:41:32,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:32,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:32,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:32,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 10:41:32,497 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:32,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:32,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1518988663, now seen corresponding path program 3 times [2024-05-12 10:41:32,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:32,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131591166] [2024-05-12 10:41:32,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:32,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:32,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:32,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131591166] [2024-05-12 10:41:32,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131591166] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:32,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:32,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:41:32,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579927812] [2024-05-12 10:41:32,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:32,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:41:32,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:32,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:41:32,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:41:32,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:32,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 126 transitions, 1000 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:32,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:32,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:32,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:33,181 INFO L124 PetriNetUnfolderBase]: 1632/2667 cut-off events. [2024-05-12 10:41:33,181 INFO L125 PetriNetUnfolderBase]: For 21261/21264 co-relation queries the response was YES. [2024-05-12 10:41:33,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12088 conditions, 2667 events. 1632/2667 cut-off events. For 21261/21264 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15459 event pairs, 472 based on Foata normal form. 2/2656 useless extension candidates. Maximal degree in co-relation 12039. Up to 2161 conditions per place. [2024-05-12 10:41:33,203 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 111 selfloop transitions, 41 changer transitions 0/165 dead transitions. [2024-05-12 10:41:33,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 165 transitions, 1463 flow [2024-05-12 10:41:33,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:41:33,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:41:33,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-05-12 10:41:33,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6352583586626139 [2024-05-12 10:41:33,205 INFO L175 Difference]: Start difference. First operand has 111 places, 126 transitions, 1000 flow. Second operand 7 states and 209 transitions. [2024-05-12 10:41:33,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 165 transitions, 1463 flow [2024-05-12 10:41:33,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 165 transitions, 1421 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-05-12 10:41:33,229 INFO L231 Difference]: Finished difference. Result has 117 places, 126 transitions, 1048 flow [2024-05-12 10:41:33,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1048, PETRI_PLACES=117, PETRI_TRANSITIONS=126} [2024-05-12 10:41:33,230 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 66 predicate places. [2024-05-12 10:41:33,230 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 126 transitions, 1048 flow [2024-05-12 10:41:33,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:33,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:33,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:33,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 10:41:33,231 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:33,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:33,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1519203989, now seen corresponding path program 1 times [2024-05-12 10:41:33,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:33,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210313963] [2024-05-12 10:41:33,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:33,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:33,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:33,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210313963] [2024-05-12 10:41:33,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210313963] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:33,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:33,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:41:33,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481712154] [2024-05-12 10:41:33,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:33,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:41:33,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:33,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:41:33,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:41:33,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:33,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 126 transitions, 1048 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:33,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:33,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:33,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:33,976 INFO L124 PetriNetUnfolderBase]: 1659/2680 cut-off events. [2024-05-12 10:41:33,976 INFO L125 PetriNetUnfolderBase]: For 23300/23303 co-relation queries the response was YES. [2024-05-12 10:41:33,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12416 conditions, 2680 events. 1659/2680 cut-off events. For 23300/23303 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15307 event pairs, 422 based on Foata normal form. 4/2677 useless extension candidates. Maximal degree in co-relation 12365. Up to 2302 conditions per place. [2024-05-12 10:41:33,998 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 125 selfloop transitions, 27 changer transitions 0/165 dead transitions. [2024-05-12 10:41:33,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 165 transitions, 1454 flow [2024-05-12 10:41:33,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:41:33,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:41:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2024-05-12 10:41:33,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-05-12 10:41:33,999 INFO L175 Difference]: Start difference. First operand has 117 places, 126 transitions, 1048 flow. Second operand 7 states and 203 transitions. [2024-05-12 10:41:33,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 165 transitions, 1454 flow [2024-05-12 10:41:34,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 165 transitions, 1358 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-05-12 10:41:34,024 INFO L231 Difference]: Finished difference. Result has 119 places, 128 transitions, 1031 flow [2024-05-12 10:41:34,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1031, PETRI_PLACES=119, PETRI_TRANSITIONS=128} [2024-05-12 10:41:34,025 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 68 predicate places. [2024-05-12 10:41:34,025 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 128 transitions, 1031 flow [2024-05-12 10:41:34,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:34,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:34,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:34,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 10:41:34,025 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:34,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:34,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1985523613, now seen corresponding path program 4 times [2024-05-12 10:41:34,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:34,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902719849] [2024-05-12 10:41:34,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:34,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:34,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:34,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:34,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902719849] [2024-05-12 10:41:34,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902719849] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:34,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:34,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:41:34,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170467105] [2024-05-12 10:41:34,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:34,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:41:34,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:34,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:41:34,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:41:34,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:34,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 128 transitions, 1031 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:34,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:34,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:34,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:34,759 INFO L124 PetriNetUnfolderBase]: 1676/2801 cut-off events. [2024-05-12 10:41:34,760 INFO L125 PetriNetUnfolderBase]: For 25656/25656 co-relation queries the response was YES. [2024-05-12 10:41:34,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12860 conditions, 2801 events. 1676/2801 cut-off events. For 25656/25656 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16786 event pairs, 648 based on Foata normal form. 2/2773 useless extension candidates. Maximal degree in co-relation 12808. Up to 2220 conditions per place. [2024-05-12 10:41:34,777 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 107 selfloop transitions, 48 changer transitions 0/168 dead transitions. [2024-05-12 10:41:34,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 168 transitions, 1546 flow [2024-05-12 10:41:34,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:41:34,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:41:34,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-05-12 10:41:34,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6200607902735562 [2024-05-12 10:41:34,779 INFO L175 Difference]: Start difference. First operand has 119 places, 128 transitions, 1031 flow. Second operand 7 states and 204 transitions. [2024-05-12 10:41:34,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 168 transitions, 1546 flow [2024-05-12 10:41:34,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 168 transitions, 1485 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-05-12 10:41:34,799 INFO L231 Difference]: Finished difference. Result has 122 places, 133 transitions, 1145 flow [2024-05-12 10:41:34,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1145, PETRI_PLACES=122, PETRI_TRANSITIONS=133} [2024-05-12 10:41:34,799 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 71 predicate places. [2024-05-12 10:41:34,799 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 133 transitions, 1145 flow [2024-05-12 10:41:34,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:34,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:34,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:34,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 10:41:34,800 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:34,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:34,800 INFO L85 PathProgramCache]: Analyzing trace with hash 862233703, now seen corresponding path program 5 times [2024-05-12 10:41:34,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:34,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329578867] [2024-05-12 10:41:34,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:34,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:35,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:35,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:35,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329578867] [2024-05-12 10:41:35,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329578867] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:35,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:35,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:41:35,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208153090] [2024-05-12 10:41:35,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:35,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:41:35,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:35,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:41:35,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:41:35,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:35,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 133 transitions, 1145 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:35,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:35,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:35,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:35,516 INFO L124 PetriNetUnfolderBase]: 1693/2730 cut-off events. [2024-05-12 10:41:35,517 INFO L125 PetriNetUnfolderBase]: For 27800/27800 co-relation queries the response was YES. [2024-05-12 10:41:35,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13226 conditions, 2730 events. 1693/2730 cut-off events. For 27800/27800 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 15633 event pairs, 432 based on Foata normal form. 2/2721 useless extension candidates. Maximal degree in co-relation 13172. Up to 2238 conditions per place. [2024-05-12 10:41:35,538 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 110 selfloop transitions, 48 changer transitions 0/171 dead transitions. [2024-05-12 10:41:35,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 171 transitions, 1660 flow [2024-05-12 10:41:35,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:41:35,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:41:35,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 206 transitions. [2024-05-12 10:41:35,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6261398176291794 [2024-05-12 10:41:35,539 INFO L175 Difference]: Start difference. First operand has 122 places, 133 transitions, 1145 flow. Second operand 7 states and 206 transitions. [2024-05-12 10:41:35,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 171 transitions, 1660 flow [2024-05-12 10:41:35,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 171 transitions, 1582 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-05-12 10:41:35,567 INFO L231 Difference]: Finished difference. Result has 126 places, 136 transitions, 1212 flow [2024-05-12 10:41:35,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1212, PETRI_PLACES=126, PETRI_TRANSITIONS=136} [2024-05-12 10:41:35,568 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 75 predicate places. [2024-05-12 10:41:35,568 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 136 transitions, 1212 flow [2024-05-12 10:41:35,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:35,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:35,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:35,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 10:41:35,569 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:35,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:35,569 INFO L85 PathProgramCache]: Analyzing trace with hash 862026313, now seen corresponding path program 6 times [2024-05-12 10:41:35,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:35,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428230170] [2024-05-12 10:41:35,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:35,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:35,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:35,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:35,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428230170] [2024-05-12 10:41:35,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428230170] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:35,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:35,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:41:35,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047999827] [2024-05-12 10:41:35,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:35,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:41:35,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:35,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:41:35,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:41:35,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:35,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 136 transitions, 1212 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:35,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:35,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:35,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:36,319 INFO L124 PetriNetUnfolderBase]: 1688/2723 cut-off events. [2024-05-12 10:41:36,319 INFO L125 PetriNetUnfolderBase]: For 29809/29809 co-relation queries the response was YES. [2024-05-12 10:41:36,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13245 conditions, 2723 events. 1688/2723 cut-off events. For 29809/29809 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 15630 event pairs, 432 based on Foata normal form. 2/2714 useless extension candidates. Maximal degree in co-relation 13190. Up to 2233 conditions per place. [2024-05-12 10:41:36,335 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 107 selfloop transitions, 49 changer transitions 0/169 dead transitions. [2024-05-12 10:41:36,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 169 transitions, 1602 flow [2024-05-12 10:41:36,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:41:36,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:41:36,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2024-05-12 10:41:36,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-05-12 10:41:36,336 INFO L175 Difference]: Start difference. First operand has 126 places, 136 transitions, 1212 flow. Second operand 7 states and 203 transitions. [2024-05-12 10:41:36,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 169 transitions, 1602 flow [2024-05-12 10:41:36,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 169 transitions, 1432 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-05-12 10:41:36,361 INFO L231 Difference]: Finished difference. Result has 127 places, 136 transitions, 1148 flow [2024-05-12 10:41:36,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1148, PETRI_PLACES=127, PETRI_TRANSITIONS=136} [2024-05-12 10:41:36,362 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 76 predicate places. [2024-05-12 10:41:36,362 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 136 transitions, 1148 flow [2024-05-12 10:41:36,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:36,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:36,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:36,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 10:41:36,363 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:36,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:36,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1118742149, now seen corresponding path program 2 times [2024-05-12 10:41:36,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:36,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734808165] [2024-05-12 10:41:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:36,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:36,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:36,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734808165] [2024-05-12 10:41:36,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734808165] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:36,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:36,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:41:36,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813528659] [2024-05-12 10:41:36,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:36,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:41:36,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:36,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:41:36,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:41:36,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:36,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 136 transitions, 1148 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:36,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:36,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:36,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:37,070 INFO L124 PetriNetUnfolderBase]: 1715/2854 cut-off events. [2024-05-12 10:41:37,070 INFO L125 PetriNetUnfolderBase]: For 32201/32201 co-relation queries the response was YES. [2024-05-12 10:41:37,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13437 conditions, 2854 events. 1715/2854 cut-off events. For 32201/32201 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16947 event pairs, 662 based on Foata normal form. 4/2831 useless extension candidates. Maximal degree in co-relation 13382. Up to 2384 conditions per place. [2024-05-12 10:41:37,092 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 131 selfloop transitions, 28 changer transitions 0/172 dead transitions. [2024-05-12 10:41:37,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 172 transitions, 1564 flow [2024-05-12 10:41:37,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:41:37,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:41:37,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-05-12 10:41:37,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6048632218844985 [2024-05-12 10:41:37,093 INFO L175 Difference]: Start difference. First operand has 127 places, 136 transitions, 1148 flow. Second operand 7 states and 199 transitions. [2024-05-12 10:41:37,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 172 transitions, 1564 flow [2024-05-12 10:41:37,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 172 transitions, 1468 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-05-12 10:41:37,118 INFO L231 Difference]: Finished difference. Result has 129 places, 138 transitions, 1137 flow [2024-05-12 10:41:37,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1137, PETRI_PLACES=129, PETRI_TRANSITIONS=138} [2024-05-12 10:41:37,119 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 78 predicate places. [2024-05-12 10:41:37,119 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 138 transitions, 1137 flow [2024-05-12 10:41:37,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:37,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:37,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:37,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 10:41:37,119 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:37,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:37,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1902256373, now seen corresponding path program 3 times [2024-05-12 10:41:37,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:37,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19037234] [2024-05-12 10:41:37,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:37,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:37,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:37,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:37,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19037234] [2024-05-12 10:41:37,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19037234] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:37,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:37,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:41:37,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177973728] [2024-05-12 10:41:37,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:37,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:41:37,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:37,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:41:37,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:41:37,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:37,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 138 transitions, 1137 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:37,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:37,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:37,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:37,809 INFO L124 PetriNetUnfolderBase]: 1742/2872 cut-off events. [2024-05-12 10:41:37,809 INFO L125 PetriNetUnfolderBase]: For 35618/35618 co-relation queries the response was YES. [2024-05-12 10:41:37,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13799 conditions, 2872 events. 1742/2872 cut-off events. For 35618/35618 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16866 event pairs, 413 based on Foata normal form. 4/2866 useless extension candidates. Maximal degree in co-relation 13743. Up to 2308 conditions per place. [2024-05-12 10:41:37,831 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 131 selfloop transitions, 35 changer transitions 0/179 dead transitions. [2024-05-12 10:41:37,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 179 transitions, 1687 flow [2024-05-12 10:41:37,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:41:37,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:41:37,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-05-12 10:41:37,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6139817629179332 [2024-05-12 10:41:37,832 INFO L175 Difference]: Start difference. First operand has 129 places, 138 transitions, 1137 flow. Second operand 7 states and 202 transitions. [2024-05-12 10:41:37,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 179 transitions, 1687 flow [2024-05-12 10:41:37,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 179 transitions, 1620 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-05-12 10:41:37,864 INFO L231 Difference]: Finished difference. Result has 131 places, 142 transitions, 1195 flow [2024-05-12 10:41:37,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1195, PETRI_PLACES=131, PETRI_TRANSITIONS=142} [2024-05-12 10:41:37,864 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 80 predicate places. [2024-05-12 10:41:37,864 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 142 transitions, 1195 flow [2024-05-12 10:41:37,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:37,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:37,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:37,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 10:41:37,865 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:37,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:37,865 INFO L85 PathProgramCache]: Analyzing trace with hash 2126687213, now seen corresponding path program 4 times [2024-05-12 10:41:37,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:37,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091299569] [2024-05-12 10:41:37,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:37,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:38,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:38,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:38,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091299569] [2024-05-12 10:41:38,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091299569] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:38,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:38,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:41:38,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167834031] [2024-05-12 10:41:38,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:38,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:41:38,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:38,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:41:38,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:41:38,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:38,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 142 transitions, 1195 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:38,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:38,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:38,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:38,585 INFO L124 PetriNetUnfolderBase]: 1734/2891 cut-off events. [2024-05-12 10:41:38,585 INFO L125 PetriNetUnfolderBase]: For 37279/37279 co-relation queries the response was YES. [2024-05-12 10:41:38,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13987 conditions, 2891 events. 1734/2891 cut-off events. For 37279/37279 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 17227 event pairs, 662 based on Foata normal form. 4/2868 useless extension candidates. Maximal degree in co-relation 13930. Up to 2413 conditions per place. [2024-05-12 10:41:38,606 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 136 selfloop transitions, 27 changer transitions 0/176 dead transitions. [2024-05-12 10:41:38,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 176 transitions, 1601 flow [2024-05-12 10:41:38,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:41:38,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:41:38,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-05-12 10:41:38,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60790273556231 [2024-05-12 10:41:38,607 INFO L175 Difference]: Start difference. First operand has 131 places, 142 transitions, 1195 flow. Second operand 7 states and 200 transitions. [2024-05-12 10:41:38,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 176 transitions, 1601 flow [2024-05-12 10:41:38,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 176 transitions, 1545 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-05-12 10:41:38,641 INFO L231 Difference]: Finished difference. Result has 135 places, 142 transitions, 1200 flow [2024-05-12 10:41:38,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1200, PETRI_PLACES=135, PETRI_TRANSITIONS=142} [2024-05-12 10:41:38,641 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 84 predicate places. [2024-05-12 10:41:38,641 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 142 transitions, 1200 flow [2024-05-12 10:41:38,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:38,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:38,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:38,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 10:41:38,642 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:38,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:38,642 INFO L85 PathProgramCache]: Analyzing trace with hash -371087759, now seen corresponding path program 1 times [2024-05-12 10:41:38,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:38,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770501815] [2024-05-12 10:41:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:38,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:38,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:38,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:38,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770501815] [2024-05-12 10:41:38,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770501815] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:38,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:38,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:41:38,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592332858] [2024-05-12 10:41:38,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:38,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:41:38,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:38,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:41:38,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:41:39,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:41:39,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 142 transitions, 1200 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:39,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:39,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:41:39,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:39,470 INFO L124 PetriNetUnfolderBase]: 1703/2801 cut-off events. [2024-05-12 10:41:39,470 INFO L125 PetriNetUnfolderBase]: For 45013/45055 co-relation queries the response was YES. [2024-05-12 10:41:39,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14328 conditions, 2801 events. 1703/2801 cut-off events. For 45013/45055 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 16613 event pairs, 280 based on Foata normal form. 14/2726 useless extension candidates. Maximal degree in co-relation 14269. Up to 2236 conditions per place. [2024-05-12 10:41:39,492 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 130 selfloop transitions, 27 changer transitions 0/195 dead transitions. [2024-05-12 10:41:39,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 195 transitions, 1766 flow [2024-05-12 10:41:39,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:41:39,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:41:39,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 238 transitions. [2024-05-12 10:41:39,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6329787234042553 [2024-05-12 10:41:39,493 INFO L175 Difference]: Start difference. First operand has 135 places, 142 transitions, 1200 flow. Second operand 8 states and 238 transitions. [2024-05-12 10:41:39,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 195 transitions, 1766 flow [2024-05-12 10:41:39,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 195 transitions, 1693 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-05-12 10:41:39,528 INFO L231 Difference]: Finished difference. Result has 137 places, 146 transitions, 1232 flow [2024-05-12 10:41:39,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1232, PETRI_PLACES=137, PETRI_TRANSITIONS=146} [2024-05-12 10:41:39,528 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 86 predicate places. [2024-05-12 10:41:39,529 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 146 transitions, 1232 flow [2024-05-12 10:41:39,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:39,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:39,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:39,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 10:41:39,529 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:39,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:39,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1055214509, now seen corresponding path program 2 times [2024-05-12 10:41:39,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:39,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044731746] [2024-05-12 10:41:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:39,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:39,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:39,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044731746] [2024-05-12 10:41:39,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044731746] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:39,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:39,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:41:39,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919280708] [2024-05-12 10:41:39,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:39,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:41:39,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:39,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:41:39,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:41:39,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:41:39,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 146 transitions, 1232 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:39,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:39,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:41:39,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:40,334 INFO L124 PetriNetUnfolderBase]: 1693/2783 cut-off events. [2024-05-12 10:41:40,334 INFO L125 PetriNetUnfolderBase]: For 47135/47186 co-relation queries the response was YES. [2024-05-12 10:41:40,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14428 conditions, 2783 events. 1693/2783 cut-off events. For 47135/47186 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 16472 event pairs, 385 based on Foata normal form. 10/2701 useless extension candidates. Maximal degree in co-relation 14368. Up to 2306 conditions per place. [2024-05-12 10:41:40,354 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 125 selfloop transitions, 23 changer transitions 0/186 dead transitions. [2024-05-12 10:41:40,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 186 transitions, 1624 flow [2024-05-12 10:41:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:41:40,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:41:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-05-12 10:41:40,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6322188449848024 [2024-05-12 10:41:40,355 INFO L175 Difference]: Start difference. First operand has 137 places, 146 transitions, 1232 flow. Second operand 7 states and 208 transitions. [2024-05-12 10:41:40,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 186 transitions, 1624 flow [2024-05-12 10:41:40,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 186 transitions, 1567 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-05-12 10:41:40,388 INFO L231 Difference]: Finished difference. Result has 140 places, 146 transitions, 1229 flow [2024-05-12 10:41:40,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1175, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1229, PETRI_PLACES=140, PETRI_TRANSITIONS=146} [2024-05-12 10:41:40,389 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 89 predicate places. [2024-05-12 10:41:40,389 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 146 transitions, 1229 flow [2024-05-12 10:41:40,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:40,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:40,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:40,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 10:41:40,389 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:40,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:40,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1526442253, now seen corresponding path program 3 times [2024-05-12 10:41:40,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:40,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491722955] [2024-05-12 10:41:40,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:40,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:40,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:40,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491722955] [2024-05-12 10:41:40,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491722955] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:40,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:40,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:41:40,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428719294] [2024-05-12 10:41:40,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:40,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:41:40,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:40,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:41:40,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:41:40,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:41:40,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 146 transitions, 1229 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:40,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:40,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:41:40,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:41,139 INFO L124 PetriNetUnfolderBase]: 1716/2815 cut-off events. [2024-05-12 10:41:41,139 INFO L125 PetriNetUnfolderBase]: For 50733/50772 co-relation queries the response was YES. [2024-05-12 10:41:41,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14682 conditions, 2815 events. 1716/2815 cut-off events. For 50733/50772 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 16678 event pairs, 331 based on Foata normal form. 6/2725 useless extension candidates. Maximal degree in co-relation 14620. Up to 2255 conditions per place. [2024-05-12 10:41:41,162 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 105 selfloop transitions, 42 changer transitions 0/185 dead transitions. [2024-05-12 10:41:41,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 185 transitions, 1635 flow [2024-05-12 10:41:41,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:41:41,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:41:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-05-12 10:41:41,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6352583586626139 [2024-05-12 10:41:41,164 INFO L175 Difference]: Start difference. First operand has 140 places, 146 transitions, 1229 flow. Second operand 7 states and 209 transitions. [2024-05-12 10:41:41,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 185 transitions, 1635 flow [2024-05-12 10:41:41,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 185 transitions, 1583 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-05-12 10:41:41,245 INFO L231 Difference]: Finished difference. Result has 141 places, 148 transitions, 1297 flow [2024-05-12 10:41:41,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1297, PETRI_PLACES=141, PETRI_TRANSITIONS=148} [2024-05-12 10:41:41,245 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 90 predicate places. [2024-05-12 10:41:41,245 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 148 transitions, 1297 flow [2024-05-12 10:41:41,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:41,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:41,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:41,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 10:41:41,246 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:41,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:41,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1039916282, now seen corresponding path program 1 times [2024-05-12 10:41:41,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:41,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404496941] [2024-05-12 10:41:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:41,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:41,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:41,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:41,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404496941] [2024-05-12 10:41:41,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404496941] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:41,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:41,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:41:41,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891765218] [2024-05-12 10:41:41,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:41,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:41:41,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:41,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:41:41,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:41:41,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:41:41,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 148 transitions, 1297 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:41,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:41,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:41:41,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:42,013 INFO L124 PetriNetUnfolderBase]: 1792/2964 cut-off events. [2024-05-12 10:41:42,013 INFO L125 PetriNetUnfolderBase]: For 48808/48808 co-relation queries the response was YES. [2024-05-12 10:41:42,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15324 conditions, 2964 events. 1792/2964 cut-off events. For 48808/48808 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 17704 event pairs, 398 based on Foata normal form. 2/2961 useless extension candidates. Maximal degree in co-relation 15261. Up to 2461 conditions per place. [2024-05-12 10:41:42,037 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 130 selfloop transitions, 27 changer transitions 0/184 dead transitions. [2024-05-12 10:41:42,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 184 transitions, 1825 flow [2024-05-12 10:41:42,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:41:42,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:41:42,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-05-12 10:41:42,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624113475177305 [2024-05-12 10:41:42,038 INFO L175 Difference]: Start difference. First operand has 141 places, 148 transitions, 1297 flow. Second operand 6 states and 176 transitions. [2024-05-12 10:41:42,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 184 transitions, 1825 flow [2024-05-12 10:41:42,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 184 transitions, 1715 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-05-12 10:41:42,087 INFO L231 Difference]: Finished difference. Result has 143 places, 159 transitions, 1367 flow [2024-05-12 10:41:42,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1367, PETRI_PLACES=143, PETRI_TRANSITIONS=159} [2024-05-12 10:41:42,088 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 92 predicate places. [2024-05-12 10:41:42,088 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 159 transitions, 1367 flow [2024-05-12 10:41:42,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:42,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:42,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:42,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 10:41:42,089 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:42,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:42,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1496115307, now seen corresponding path program 4 times [2024-05-12 10:41:42,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:42,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127756203] [2024-05-12 10:41:42,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:42,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:42,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:42,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:42,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127756203] [2024-05-12 10:41:42,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127756203] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:42,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:42,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:41:42,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106801165] [2024-05-12 10:41:42,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:42,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:41:42,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:42,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:41:42,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:41:42,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:41:42,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 159 transitions, 1367 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:42,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:42,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:41:42,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:42,857 INFO L124 PetriNetUnfolderBase]: 1776/3017 cut-off events. [2024-05-12 10:41:42,857 INFO L125 PetriNetUnfolderBase]: For 56800/56849 co-relation queries the response was YES. [2024-05-12 10:41:42,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15666 conditions, 3017 events. 1776/3017 cut-off events. For 56800/56849 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 18522 event pairs, 402 based on Foata normal form. 16/2938 useless extension candidates. Maximal degree in co-relation 15601. Up to 2325 conditions per place. [2024-05-12 10:41:42,885 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 110 selfloop transitions, 47 changer transitions 0/195 dead transitions. [2024-05-12 10:41:42,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 195 transitions, 1789 flow [2024-05-12 10:41:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:41:42,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:41:42,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 206 transitions. [2024-05-12 10:41:42,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6261398176291794 [2024-05-12 10:41:42,887 INFO L175 Difference]: Start difference. First operand has 143 places, 159 transitions, 1367 flow. Second operand 7 states and 206 transitions. [2024-05-12 10:41:42,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 195 transitions, 1789 flow [2024-05-12 10:41:42,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 195 transitions, 1757 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-05-12 10:41:42,937 INFO L231 Difference]: Finished difference. Result has 149 places, 161 transitions, 1469 flow [2024-05-12 10:41:42,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1469, PETRI_PLACES=149, PETRI_TRANSITIONS=161} [2024-05-12 10:41:42,938 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 98 predicate places. [2024-05-12 10:41:42,938 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 161 transitions, 1469 flow [2024-05-12 10:41:42,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:42,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:42,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:42,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 10:41:42,939 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:42,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:42,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1053248762, now seen corresponding path program 2 times [2024-05-12 10:41:42,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:42,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383110323] [2024-05-12 10:41:42,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:42,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:43,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:43,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383110323] [2024-05-12 10:41:43,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383110323] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:43,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:43,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:41:43,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813031349] [2024-05-12 10:41:43,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:43,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:41:43,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:43,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:41:43,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:41:43,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:41:43,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 161 transitions, 1469 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:43,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:43,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:41:43,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:43,753 INFO L124 PetriNetUnfolderBase]: 1795/3059 cut-off events. [2024-05-12 10:41:43,753 INFO L125 PetriNetUnfolderBase]: For 53933/53935 co-relation queries the response was YES. [2024-05-12 10:41:43,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15877 conditions, 3059 events. 1795/3059 cut-off events. For 53933/53935 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 18932 event pairs, 666 based on Foata normal form. 4/3034 useless extension candidates. Maximal degree in co-relation 15810. Up to 2492 conditions per place. [2024-05-12 10:41:43,778 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 131 selfloop transitions, 24 changer transitions 0/182 dead transitions. [2024-05-12 10:41:43,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 182 transitions, 1855 flow [2024-05-12 10:41:43,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:41:43,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:41:43,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-05-12 10:41:43,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675531914893617 [2024-05-12 10:41:43,779 INFO L175 Difference]: Start difference. First operand has 149 places, 161 transitions, 1469 flow. Second operand 4 states and 127 transitions. [2024-05-12 10:41:43,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 182 transitions, 1855 flow [2024-05-12 10:41:43,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 182 transitions, 1741 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-05-12 10:41:43,838 INFO L231 Difference]: Finished difference. Result has 148 places, 164 transitions, 1462 flow [2024-05-12 10:41:43,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1462, PETRI_PLACES=148, PETRI_TRANSITIONS=164} [2024-05-12 10:41:43,839 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 97 predicate places. [2024-05-12 10:41:43,839 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 164 transitions, 1462 flow [2024-05-12 10:41:43,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:43,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:43,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:43,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 10:41:43,839 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:43,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:43,840 INFO L85 PathProgramCache]: Analyzing trace with hash 290757730, now seen corresponding path program 3 times [2024-05-12 10:41:43,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:43,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991843116] [2024-05-12 10:41:43,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:43,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:44,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:44,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:44,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991843116] [2024-05-12 10:41:44,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991843116] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:44,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:44,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:41:44,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311210126] [2024-05-12 10:41:44,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:44,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:41:44,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:44,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:41:44,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:41:44,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:41:44,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 164 transitions, 1462 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:44,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:44,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:41:44,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:44,582 INFO L124 PetriNetUnfolderBase]: 1793/3045 cut-off events. [2024-05-12 10:41:44,582 INFO L125 PetriNetUnfolderBase]: For 55163/55173 co-relation queries the response was YES. [2024-05-12 10:41:44,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15646 conditions, 3045 events. 1793/3045 cut-off events. For 55163/55173 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 18797 event pairs, 666 based on Foata normal form. 10/3025 useless extension candidates. Maximal degree in co-relation 15578. Up to 2457 conditions per place. [2024-05-12 10:41:44,609 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 128 selfloop transitions, 30 changer transitions 0/185 dead transitions. [2024-05-12 10:41:44,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 185 transitions, 1828 flow [2024-05-12 10:41:44,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:41:44,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:41:44,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-05-12 10:41:44,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6425531914893617 [2024-05-12 10:41:44,611 INFO L175 Difference]: Start difference. First operand has 148 places, 164 transitions, 1462 flow. Second operand 5 states and 151 transitions. [2024-05-12 10:41:44,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 185 transitions, 1828 flow [2024-05-12 10:41:44,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 185 transitions, 1775 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-05-12 10:41:44,666 INFO L231 Difference]: Finished difference. Result has 151 places, 164 transitions, 1481 flow [2024-05-12 10:41:44,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1481, PETRI_PLACES=151, PETRI_TRANSITIONS=164} [2024-05-12 10:41:44,667 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 100 predicate places. [2024-05-12 10:41:44,667 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 164 transitions, 1481 flow [2024-05-12 10:41:44,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:44,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:44,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:44,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 10:41:44,667 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:44,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:44,668 INFO L85 PathProgramCache]: Analyzing trace with hash 875766880, now seen corresponding path program 1 times [2024-05-12 10:41:44,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:44,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427318386] [2024-05-12 10:41:44,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:44,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:45,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:45,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:45,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427318386] [2024-05-12 10:41:45,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427318386] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:45,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:45,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:41:45,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575138317] [2024-05-12 10:41:45,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:45,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:41:45,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:45,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:41:45,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:41:45,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:41:45,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 164 transitions, 1481 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:45,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:45,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:41:45,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:45,408 INFO L124 PetriNetUnfolderBase]: 1785/3081 cut-off events. [2024-05-12 10:41:45,409 INFO L125 PetriNetUnfolderBase]: For 59600/59604 co-relation queries the response was YES. [2024-05-12 10:41:45,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16095 conditions, 3081 events. 1785/3081 cut-off events. For 59600/59604 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 19174 event pairs, 579 based on Foata normal form. 6/3055 useless extension candidates. Maximal degree in co-relation 16026. Up to 2456 conditions per place. [2024-05-12 10:41:45,438 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 141 selfloop transitions, 24 changer transitions 0/195 dead transitions. [2024-05-12 10:41:45,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 195 transitions, 1987 flow [2024-05-12 10:41:45,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:41:45,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:41:45,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-05-12 10:41:45,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6205673758865248 [2024-05-12 10:41:45,447 INFO L175 Difference]: Start difference. First operand has 151 places, 164 transitions, 1481 flow. Second operand 6 states and 175 transitions. [2024-05-12 10:41:45,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 195 transitions, 1987 flow [2024-05-12 10:41:45,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 195 transitions, 1914 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-05-12 10:41:45,547 INFO L231 Difference]: Finished difference. Result has 153 places, 170 transitions, 1526 flow [2024-05-12 10:41:45,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1526, PETRI_PLACES=153, PETRI_TRANSITIONS=170} [2024-05-12 10:41:45,547 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 102 predicate places. [2024-05-12 10:41:45,547 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 170 transitions, 1526 flow [2024-05-12 10:41:45,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:45,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:45,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:45,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 10:41:45,548 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:45,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:45,548 INFO L85 PathProgramCache]: Analyzing trace with hash 726253862, now seen corresponding path program 2 times [2024-05-12 10:41:45,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:45,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499579804] [2024-05-12 10:41:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:45,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:45,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:45,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:45,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499579804] [2024-05-12 10:41:45,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499579804] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:45,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:45,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:41:45,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815499494] [2024-05-12 10:41:45,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:45,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:41:45,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:45,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:41:45,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:41:45,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:41:45,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 170 transitions, 1526 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:45,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:45,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:41:45,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:46,338 INFO L124 PetriNetUnfolderBase]: 1819/3080 cut-off events. [2024-05-12 10:41:46,338 INFO L125 PetriNetUnfolderBase]: For 60220/60220 co-relation queries the response was YES. [2024-05-12 10:41:46,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16520 conditions, 3080 events. 1819/3080 cut-off events. For 60220/60220 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 18856 event pairs, 369 based on Foata normal form. 2/3074 useless extension candidates. Maximal degree in co-relation 16451. Up to 2527 conditions per place. [2024-05-12 10:41:46,364 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 145 selfloop transitions, 24 changer transitions 0/199 dead transitions. [2024-05-12 10:41:46,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 199 transitions, 1994 flow [2024-05-12 10:41:46,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:41:46,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:41:46,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2024-05-12 10:41:46,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6028368794326241 [2024-05-12 10:41:46,365 INFO L175 Difference]: Start difference. First operand has 153 places, 170 transitions, 1526 flow. Second operand 6 states and 170 transitions. [2024-05-12 10:41:46,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 199 transitions, 1994 flow [2024-05-12 10:41:46,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 199 transitions, 1945 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-05-12 10:41:46,429 INFO L231 Difference]: Finished difference. Result has 157 places, 178 transitions, 1620 flow [2024-05-12 10:41:46,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1620, PETRI_PLACES=157, PETRI_TRANSITIONS=178} [2024-05-12 10:41:46,430 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 106 predicate places. [2024-05-12 10:41:46,430 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 178 transitions, 1620 flow [2024-05-12 10:41:46,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:46,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:46,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:46,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 10:41:46,430 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:46,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:46,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1675568102, now seen corresponding path program 3 times [2024-05-12 10:41:46,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:46,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538394412] [2024-05-12 10:41:46,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:46,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:46,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:46,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:46,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538394412] [2024-05-12 10:41:46,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538394412] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:46,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:46,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:41:46,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037764684] [2024-05-12 10:41:46,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:46,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:41:46,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:46,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:41:46,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:41:46,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:41:46,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 178 transitions, 1620 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:46,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:46,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:41:46,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:47,204 INFO L124 PetriNetUnfolderBase]: 1825/3137 cut-off events. [2024-05-12 10:41:47,204 INFO L125 PetriNetUnfolderBase]: For 62727/62731 co-relation queries the response was YES. [2024-05-12 10:41:47,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16702 conditions, 3137 events. 1825/3137 cut-off events. For 62727/62731 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 19530 event pairs, 556 based on Foata normal form. 6/3117 useless extension candidates. Maximal degree in co-relation 16631. Up to 2499 conditions per place. [2024-05-12 10:41:47,229 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 140 selfloop transitions, 29 changer transitions 0/199 dead transitions. [2024-05-12 10:41:47,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 199 transitions, 2008 flow [2024-05-12 10:41:47,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:41:47,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:41:47,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-05-12 10:41:47,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-05-12 10:41:47,230 INFO L175 Difference]: Start difference. First operand has 157 places, 178 transitions, 1620 flow. Second operand 5 states and 150 transitions. [2024-05-12 10:41:47,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 199 transitions, 2008 flow [2024-05-12 10:41:47,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 199 transitions, 1931 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-05-12 10:41:47,298 INFO L231 Difference]: Finished difference. Result has 159 places, 178 transitions, 1617 flow [2024-05-12 10:41:47,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1543, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1617, PETRI_PLACES=159, PETRI_TRANSITIONS=178} [2024-05-12 10:41:47,298 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 108 predicate places. [2024-05-12 10:41:47,298 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 178 transitions, 1617 flow [2024-05-12 10:41:47,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:47,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:47,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:47,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 10:41:47,299 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:47,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:47,299 INFO L85 PathProgramCache]: Analyzing trace with hash 305662902, now seen corresponding path program 1 times [2024-05-12 10:41:47,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:47,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114021681] [2024-05-12 10:41:47,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:47,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:47,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:47,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:47,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114021681] [2024-05-12 10:41:47,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114021681] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:47,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:47,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:41:47,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144898198] [2024-05-12 10:41:47,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:47,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:41:47,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:47,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:41:47,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:41:47,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:41:47,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 178 transitions, 1617 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:47,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:47,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:41:47,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:48,043 INFO L124 PetriNetUnfolderBase]: 1850/3070 cut-off events. [2024-05-12 10:41:48,043 INFO L125 PetriNetUnfolderBase]: For 62618/62618 co-relation queries the response was YES. [2024-05-12 10:41:48,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16534 conditions, 3070 events. 1850/3070 cut-off events. For 62618/62618 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 18540 event pairs, 389 based on Foata normal form. 2/3063 useless extension candidates. Maximal degree in co-relation 16462. Up to 2593 conditions per place. [2024-05-12 10:41:48,070 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 156 selfloop transitions, 10 changer transitions 0/193 dead transitions. [2024-05-12 10:41:48,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 193 transitions, 2001 flow [2024-05-12 10:41:48,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:41:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:41:48,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-05-12 10:41:48,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6329787234042553 [2024-05-12 10:41:48,071 INFO L175 Difference]: Start difference. First operand has 159 places, 178 transitions, 1617 flow. Second operand 4 states and 119 transitions. [2024-05-12 10:41:48,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 193 transitions, 2001 flow [2024-05-12 10:41:48,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 193 transitions, 1941 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-05-12 10:41:48,128 INFO L231 Difference]: Finished difference. Result has 159 places, 180 transitions, 1608 flow [2024-05-12 10:41:48,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1608, PETRI_PLACES=159, PETRI_TRANSITIONS=180} [2024-05-12 10:41:48,128 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 108 predicate places. [2024-05-12 10:41:48,128 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 180 transitions, 1608 flow [2024-05-12 10:41:48,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:48,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:48,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:48,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 10:41:48,129 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:48,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:48,129 INFO L85 PathProgramCache]: Analyzing trace with hash -748361160, now seen corresponding path program 1 times [2024-05-12 10:41:48,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:48,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380445253] [2024-05-12 10:41:48,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:48,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:48,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:48,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:48,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380445253] [2024-05-12 10:41:48,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380445253] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:48,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:48,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:41:48,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726407558] [2024-05-12 10:41:48,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:48,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:41:48,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:48,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:41:48,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:41:48,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:48,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 180 transitions, 1608 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:48,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:48,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:48,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:49,062 INFO L124 PetriNetUnfolderBase]: 2160/3578 cut-off events. [2024-05-12 10:41:49,062 INFO L125 PetriNetUnfolderBase]: For 78171/78171 co-relation queries the response was YES. [2024-05-12 10:41:49,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19101 conditions, 3578 events. 2160/3578 cut-off events. For 78171/78171 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 22100 event pairs, 542 based on Foata normal form. 12/3557 useless extension candidates. Maximal degree in co-relation 19028. Up to 2749 conditions per place. [2024-05-12 10:41:49,097 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 214 selfloop transitions, 20 changer transitions 0/247 dead transitions. [2024-05-12 10:41:49,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 247 transitions, 2430 flow [2024-05-12 10:41:49,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:41:49,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:41:49,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 262 transitions. [2024-05-12 10:41:49,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6193853427895981 [2024-05-12 10:41:49,098 INFO L175 Difference]: Start difference. First operand has 159 places, 180 transitions, 1608 flow. Second operand 9 states and 262 transitions. [2024-05-12 10:41:49,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 247 transitions, 2430 flow [2024-05-12 10:41:49,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 247 transitions, 2395 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-05-12 10:41:49,180 INFO L231 Difference]: Finished difference. Result has 168 places, 185 transitions, 1687 flow [2024-05-12 10:41:49,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1687, PETRI_PLACES=168, PETRI_TRANSITIONS=185} [2024-05-12 10:41:49,181 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 117 predicate places. [2024-05-12 10:41:49,181 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 185 transitions, 1687 flow [2024-05-12 10:41:49,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:49,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:49,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:49,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 10:41:49,182 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:49,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:49,182 INFO L85 PathProgramCache]: Analyzing trace with hash -659795400, now seen corresponding path program 2 times [2024-05-12 10:41:49,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:49,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938414268] [2024-05-12 10:41:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:49,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:49,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:49,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:49,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938414268] [2024-05-12 10:41:49,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938414268] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:49,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:49,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:41:49,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075510441] [2024-05-12 10:41:49,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:49,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:41:49,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:49,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:41:49,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:41:49,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:49,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 185 transitions, 1687 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:49,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:49,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:49,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:50,135 INFO L124 PetriNetUnfolderBase]: 2227/3611 cut-off events. [2024-05-12 10:41:50,135 INFO L125 PetriNetUnfolderBase]: For 82207/82207 co-relation queries the response was YES. [2024-05-12 10:41:50,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19909 conditions, 3611 events. 2227/3611 cut-off events. For 82207/82207 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 21981 event pairs, 395 based on Foata normal form. 12/3618 useless extension candidates. Maximal degree in co-relation 19833. Up to 2943 conditions per place. [2024-05-12 10:41:50,169 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 211 selfloop transitions, 18 changer transitions 0/242 dead transitions. [2024-05-12 10:41:50,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 242 transitions, 2468 flow [2024-05-12 10:41:50,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:41:50,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:41:50,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 235 transitions. [2024-05-12 10:41:50,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-05-12 10:41:50,171 INFO L175 Difference]: Start difference. First operand has 168 places, 185 transitions, 1687 flow. Second operand 8 states and 235 transitions. [2024-05-12 10:41:50,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 242 transitions, 2468 flow [2024-05-12 10:41:50,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 242 transitions, 2424 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-05-12 10:41:50,281 INFO L231 Difference]: Finished difference. Result has 173 places, 188 transitions, 1733 flow [2024-05-12 10:41:50,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1733, PETRI_PLACES=173, PETRI_TRANSITIONS=188} [2024-05-12 10:41:50,281 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 122 predicate places. [2024-05-12 10:41:50,281 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 188 transitions, 1733 flow [2024-05-12 10:41:50,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:50,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:50,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:50,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 10:41:50,282 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:50,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:50,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1734929448, now seen corresponding path program 3 times [2024-05-12 10:41:50,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:50,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635574646] [2024-05-12 10:41:50,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:50,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:50,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:50,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:50,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635574646] [2024-05-12 10:41:50,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635574646] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:50,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:50,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:41:50,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610633483] [2024-05-12 10:41:50,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:50,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:41:50,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:50,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:41:50,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:41:50,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:50,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 188 transitions, 1733 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:50,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:50,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:50,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:51,230 INFO L124 PetriNetUnfolderBase]: 2199/3567 cut-off events. [2024-05-12 10:41:51,230 INFO L125 PetriNetUnfolderBase]: For 80162/80162 co-relation queries the response was YES. [2024-05-12 10:41:51,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19331 conditions, 3567 events. 2199/3567 cut-off events. For 80162/80162 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 21679 event pairs, 404 based on Foata normal form. 16/3578 useless extension candidates. Maximal degree in co-relation 19252. Up to 3060 conditions per place. [2024-05-12 10:41:51,261 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 208 selfloop transitions, 17 changer transitions 0/238 dead transitions. [2024-05-12 10:41:51,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 238 transitions, 2339 flow [2024-05-12 10:41:51,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:41:51,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:41:51,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 230 transitions. [2024-05-12 10:41:51,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6117021276595744 [2024-05-12 10:41:51,263 INFO L175 Difference]: Start difference. First operand has 173 places, 188 transitions, 1733 flow. Second operand 8 states and 230 transitions. [2024-05-12 10:41:51,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 238 transitions, 2339 flow [2024-05-12 10:41:51,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 238 transitions, 2297 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-05-12 10:41:51,354 INFO L231 Difference]: Finished difference. Result has 177 places, 189 transitions, 1752 flow [2024-05-12 10:41:51,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1752, PETRI_PLACES=177, PETRI_TRANSITIONS=189} [2024-05-12 10:41:51,354 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 126 predicate places. [2024-05-12 10:41:51,355 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 189 transitions, 1752 flow [2024-05-12 10:41:51,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:51,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:51,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:51,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 10:41:51,355 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:51,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:51,356 INFO L85 PathProgramCache]: Analyzing trace with hash -341440908, now seen corresponding path program 4 times [2024-05-12 10:41:51,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:51,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471252985] [2024-05-12 10:41:51,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:51,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:51,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:51,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471252985] [2024-05-12 10:41:51,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471252985] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:51,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:51,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:41:51,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433775239] [2024-05-12 10:41:51,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:51,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:41:51,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:51,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:41:51,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:41:51,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:51,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 189 transitions, 1752 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:51,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:51,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:51,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:52,227 INFO L124 PetriNetUnfolderBase]: 2293/3741 cut-off events. [2024-05-12 10:41:52,227 INFO L125 PetriNetUnfolderBase]: For 84569/84572 co-relation queries the response was YES. [2024-05-12 10:41:52,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20077 conditions, 3741 events. 2293/3741 cut-off events. For 84569/84572 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 23062 event pairs, 441 based on Foata normal form. 16/3750 useless extension candidates. Maximal degree in co-relation 19996. Up to 3028 conditions per place. [2024-05-12 10:41:52,321 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 173 selfloop transitions, 50 changer transitions 0/236 dead transitions. [2024-05-12 10:41:52,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 236 transitions, 2344 flow [2024-05-12 10:41:52,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:41:52,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:41:52,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 234 transitions. [2024-05-12 10:41:52,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6223404255319149 [2024-05-12 10:41:52,323 INFO L175 Difference]: Start difference. First operand has 177 places, 189 transitions, 1752 flow. Second operand 8 states and 234 transitions. [2024-05-12 10:41:52,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 236 transitions, 2344 flow [2024-05-12 10:41:52,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 236 transitions, 2313 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-05-12 10:41:52,424 INFO L231 Difference]: Finished difference. Result has 179 places, 190 transitions, 1846 flow [2024-05-12 10:41:52,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1846, PETRI_PLACES=179, PETRI_TRANSITIONS=190} [2024-05-12 10:41:52,425 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 128 predicate places. [2024-05-12 10:41:52,425 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 190 transitions, 1846 flow [2024-05-12 10:41:52,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:52,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:52,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:52,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 10:41:52,425 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:52,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:52,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1853834280, now seen corresponding path program 5 times [2024-05-12 10:41:52,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:52,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093662977] [2024-05-12 10:41:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:52,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:52,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:52,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:52,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093662977] [2024-05-12 10:41:52,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093662977] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:52,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:52,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:41:52,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979338949] [2024-05-12 10:41:52,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:52,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:41:52,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:52,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:41:52,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:41:52,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:52,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 190 transitions, 1846 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:52,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:52,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:52,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:53,423 INFO L124 PetriNetUnfolderBase]: 2387/3905 cut-off events. [2024-05-12 10:41:53,424 INFO L125 PetriNetUnfolderBase]: For 91130/91133 co-relation queries the response was YES. [2024-05-12 10:41:53,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21204 conditions, 3905 events. 2387/3905 cut-off events. For 91130/91133 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 24312 event pairs, 462 based on Foata normal form. 16/3914 useless extension candidates. Maximal degree in co-relation 21122. Up to 3178 conditions per place. [2024-05-12 10:41:53,462 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 175 selfloop transitions, 49 changer transitions 0/237 dead transitions. [2024-05-12 10:41:53,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 237 transitions, 2442 flow [2024-05-12 10:41:53,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:41:53,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:41:53,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 235 transitions. [2024-05-12 10:41:53,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-05-12 10:41:53,463 INFO L175 Difference]: Start difference. First operand has 179 places, 190 transitions, 1846 flow. Second operand 8 states and 235 transitions. [2024-05-12 10:41:53,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 237 transitions, 2442 flow [2024-05-12 10:41:53,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 237 transitions, 2335 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-05-12 10:41:53,596 INFO L231 Difference]: Finished difference. Result has 181 places, 191 transitions, 1864 flow [2024-05-12 10:41:53,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1739, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1864, PETRI_PLACES=181, PETRI_TRANSITIONS=191} [2024-05-12 10:41:53,596 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 130 predicate places. [2024-05-12 10:41:53,596 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 191 transitions, 1864 flow [2024-05-12 10:41:53,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:53,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:53,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:53,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 10:41:53,597 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:53,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:53,597 INFO L85 PathProgramCache]: Analyzing trace with hash -540890568, now seen corresponding path program 6 times [2024-05-12 10:41:53,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:53,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175303236] [2024-05-12 10:41:53,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:53,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:53,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:53,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175303236] [2024-05-12 10:41:53,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175303236] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:53,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:53,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:41:53,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902034329] [2024-05-12 10:41:53,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:53,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:41:53,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:53,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:41:53,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:41:53,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:53,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 191 transitions, 1864 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:53,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:53,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:53,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:54,531 INFO L124 PetriNetUnfolderBase]: 2454/4121 cut-off events. [2024-05-12 10:41:54,531 INFO L125 PetriNetUnfolderBase]: For 94007/94010 co-relation queries the response was YES. [2024-05-12 10:41:54,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21861 conditions, 4121 events. 2454/4121 cut-off events. For 94007/94010 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 26337 event pairs, 575 based on Foata normal form. 12/4123 useless extension candidates. Maximal degree in co-relation 21778. Up to 3030 conditions per place. [2024-05-12 10:41:54,573 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 178 selfloop transitions, 52 changer transitions 0/243 dead transitions. [2024-05-12 10:41:54,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 243 transitions, 2514 flow [2024-05-12 10:41:54,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:41:54,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:41:54,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 237 transitions. [2024-05-12 10:41:54,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6303191489361702 [2024-05-12 10:41:54,574 INFO L175 Difference]: Start difference. First operand has 181 places, 191 transitions, 1864 flow. Second operand 8 states and 237 transitions. [2024-05-12 10:41:54,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 243 transitions, 2514 flow [2024-05-12 10:41:54,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 243 transitions, 2407 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-05-12 10:41:54,698 INFO L231 Difference]: Finished difference. Result has 184 places, 194 transitions, 1924 flow [2024-05-12 10:41:54,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1924, PETRI_PLACES=184, PETRI_TRANSITIONS=194} [2024-05-12 10:41:54,699 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 133 predicate places. [2024-05-12 10:41:54,699 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 194 transitions, 1924 flow [2024-05-12 10:41:54,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:54,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:54,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:54,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 10:41:54,700 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:54,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:54,700 INFO L85 PathProgramCache]: Analyzing trace with hash -535165116, now seen corresponding path program 1 times [2024-05-12 10:41:54,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:54,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381243749] [2024-05-12 10:41:54,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:54,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:55,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:55,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:55,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381243749] [2024-05-12 10:41:55,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381243749] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:55,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:55,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:41:55,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472991268] [2024-05-12 10:41:55,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:55,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:41:55,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:55,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:41:55,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:41:55,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:55,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 194 transitions, 1924 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:55,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:55,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:55,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:55,693 INFO L124 PetriNetUnfolderBase]: 2521/4137 cut-off events. [2024-05-12 10:41:55,694 INFO L125 PetriNetUnfolderBase]: For 98719/98722 co-relation queries the response was YES. [2024-05-12 10:41:55,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22481 conditions, 4137 events. 2521/4137 cut-off events. For 98719/98722 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 26172 event pairs, 468 based on Foata normal form. 12/4142 useless extension candidates. Maximal degree in co-relation 22396. Up to 3007 conditions per place. [2024-05-12 10:41:55,726 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 177 selfloop transitions, 54 changer transitions 0/244 dead transitions. [2024-05-12 10:41:55,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 244 transitions, 2556 flow [2024-05-12 10:41:55,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:41:55,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:41:55,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 236 transitions. [2024-05-12 10:41:55,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6276595744680851 [2024-05-12 10:41:55,729 INFO L175 Difference]: Start difference. First operand has 184 places, 194 transitions, 1924 flow. Second operand 8 states and 236 transitions. [2024-05-12 10:41:55,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 244 transitions, 2556 flow [2024-05-12 10:41:55,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 244 transitions, 2478 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-05-12 10:41:55,856 INFO L231 Difference]: Finished difference. Result has 188 places, 195 transitions, 1984 flow [2024-05-12 10:41:55,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1846, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1984, PETRI_PLACES=188, PETRI_TRANSITIONS=195} [2024-05-12 10:41:55,857 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 137 predicate places. [2024-05-12 10:41:55,857 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 195 transitions, 1984 flow [2024-05-12 10:41:55,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:55,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:55,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:55,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 10:41:55,857 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:55,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:55,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1122679870, now seen corresponding path program 7 times [2024-05-12 10:41:55,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:55,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729819491] [2024-05-12 10:41:55,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:55,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:56,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:56,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:56,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729819491] [2024-05-12 10:41:56,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729819491] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:56,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:56,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:41:56,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633253373] [2024-05-12 10:41:56,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:56,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:41:56,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:56,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:41:56,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:41:56,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:56,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 195 transitions, 1984 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:56,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:56,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:56,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:56,817 INFO L124 PetriNetUnfolderBase]: 2615/4289 cut-off events. [2024-05-12 10:41:56,817 INFO L125 PetriNetUnfolderBase]: For 108384/108384 co-relation queries the response was YES. [2024-05-12 10:41:56,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23637 conditions, 4289 events. 2615/4289 cut-off events. For 108384/108384 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 27369 event pairs, 652 based on Foata normal form. 16/4284 useless extension candidates. Maximal degree in co-relation 23550. Up to 3546 conditions per place. [2024-05-12 10:41:56,860 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 174 selfloop transitions, 52 changer transitions 0/239 dead transitions. [2024-05-12 10:41:56,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 239 transitions, 2582 flow [2024-05-12 10:41:56,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:41:56,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:41:56,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 230 transitions. [2024-05-12 10:41:56,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6117021276595744 [2024-05-12 10:41:56,861 INFO L175 Difference]: Start difference. First operand has 188 places, 195 transitions, 1984 flow. Second operand 8 states and 230 transitions. [2024-05-12 10:41:56,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 239 transitions, 2582 flow [2024-05-12 10:41:57,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 239 transitions, 2458 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-05-12 10:41:57,005 INFO L231 Difference]: Finished difference. Result has 190 places, 196 transitions, 1997 flow [2024-05-12 10:41:57,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1860, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1997, PETRI_PLACES=190, PETRI_TRANSITIONS=196} [2024-05-12 10:41:57,006 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 139 predicate places. [2024-05-12 10:41:57,006 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 196 transitions, 1997 flow [2024-05-12 10:41:57,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:57,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:57,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:57,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 10:41:57,007 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:57,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:57,007 INFO L85 PathProgramCache]: Analyzing trace with hash -665614900, now seen corresponding path program 8 times [2024-05-12 10:41:57,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:57,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112188087] [2024-05-12 10:41:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:57,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:57,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:57,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:57,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112188087] [2024-05-12 10:41:57,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112188087] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:57,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:57,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:41:57,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211305333] [2024-05-12 10:41:57,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:57,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:41:57,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:57,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:41:57,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:41:57,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:57,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 196 transitions, 1997 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:57,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:57,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:57,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:58,021 INFO L124 PetriNetUnfolderBase]: 2709/4627 cut-off events. [2024-05-12 10:41:58,021 INFO L125 PetriNetUnfolderBase]: For 115443/115443 co-relation queries the response was YES. [2024-05-12 10:41:58,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24564 conditions, 4627 events. 2709/4627 cut-off events. For 115443/115443 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 31076 event pairs, 897 based on Foata normal form. 16/4585 useless extension candidates. Maximal degree in co-relation 24476. Up to 3696 conditions per place. [2024-05-12 10:41:58,069 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 178 selfloop transitions, 49 changer transitions 0/240 dead transitions. [2024-05-12 10:41:58,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 240 transitions, 2599 flow [2024-05-12 10:41:58,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:41:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:41:58,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 232 transitions. [2024-05-12 10:41:58,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-05-12 10:41:58,070 INFO L175 Difference]: Start difference. First operand has 190 places, 196 transitions, 1997 flow. Second operand 8 states and 232 transitions. [2024-05-12 10:41:58,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 240 transitions, 2599 flow [2024-05-12 10:41:58,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 240 transitions, 2480 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-05-12 10:41:58,226 INFO L231 Difference]: Finished difference. Result has 192 places, 197 transitions, 2011 flow [2024-05-12 10:41:58,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2011, PETRI_PLACES=192, PETRI_TRANSITIONS=197} [2024-05-12 10:41:58,226 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 141 predicate places. [2024-05-12 10:41:58,226 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 197 transitions, 2011 flow [2024-05-12 10:41:58,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:58,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:58,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:58,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 10:41:58,227 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:58,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:58,227 INFO L85 PathProgramCache]: Analyzing trace with hash -864916690, now seen corresponding path program 9 times [2024-05-12 10:41:58,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:58,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056433327] [2024-05-12 10:41:58,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:58,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:58,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:58,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:58,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056433327] [2024-05-12 10:41:58,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056433327] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:58,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:58,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:41:58,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142899532] [2024-05-12 10:41:58,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:58,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:41:58,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:58,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:41:58,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:41:58,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:58,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 197 transitions, 2011 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:58,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:58,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:58,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:59,256 INFO L124 PetriNetUnfolderBase]: 2803/4791 cut-off events. [2024-05-12 10:41:59,257 INFO L125 PetriNetUnfolderBase]: For 121576/121576 co-relation queries the response was YES. [2024-05-12 10:41:59,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25348 conditions, 4791 events. 2803/4791 cut-off events. For 121576/121576 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 32079 event pairs, 680 based on Foata normal form. 16/4791 useless extension candidates. Maximal degree in co-relation 25259. Up to 3846 conditions per place. [2024-05-12 10:41:59,301 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 178 selfloop transitions, 50 changer transitions 0/241 dead transitions. [2024-05-12 10:41:59,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 241 transitions, 2617 flow [2024-05-12 10:41:59,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:41:59,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:41:59,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 231 transitions. [2024-05-12 10:41:59,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6143617021276596 [2024-05-12 10:41:59,302 INFO L175 Difference]: Start difference. First operand has 192 places, 197 transitions, 2011 flow. Second operand 8 states and 231 transitions. [2024-05-12 10:41:59,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 241 transitions, 2617 flow [2024-05-12 10:41:59,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 241 transitions, 2502 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-05-12 10:41:59,466 INFO L231 Difference]: Finished difference. Result has 194 places, 198 transitions, 2033 flow [2024-05-12 10:41:59,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1896, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2033, PETRI_PLACES=194, PETRI_TRANSITIONS=198} [2024-05-12 10:41:59,466 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 143 predicate places. [2024-05-12 10:41:59,466 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 198 transitions, 2033 flow [2024-05-12 10:41:59,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:59,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:59,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:59,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 10:41:59,467 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:59,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:59,467 INFO L85 PathProgramCache]: Analyzing trace with hash -521516406, now seen corresponding path program 10 times [2024-05-12 10:41:59,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:59,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501824887] [2024-05-12 10:41:59,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:59,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:59,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:59,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:59,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501824887] [2024-05-12 10:41:59,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501824887] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:59,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:59,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:41:59,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825571993] [2024-05-12 10:41:59,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:59,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:41:59,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:59,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:41:59,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:41:59,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:41:59,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 198 transitions, 2033 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:59,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:59,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:41:59,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:00,449 INFO L124 PetriNetUnfolderBase]: 2835/4645 cut-off events. [2024-05-12 10:42:00,449 INFO L125 PetriNetUnfolderBase]: For 118254/118254 co-relation queries the response was YES. [2024-05-12 10:42:00,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25160 conditions, 4645 events. 2835/4645 cut-off events. For 118254/118254 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 30169 event pairs, 539 based on Foata normal form. 12/4646 useless extension candidates. Maximal degree in co-relation 25070. Up to 3513 conditions per place. [2024-05-12 10:42:00,497 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 180 selfloop transitions, 54 changer transitions 0/247 dead transitions. [2024-05-12 10:42:00,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 247 transitions, 2703 flow [2024-05-12 10:42:00,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:42:00,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:42:00,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 233 transitions. [2024-05-12 10:42:00,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6196808510638298 [2024-05-12 10:42:00,498 INFO L175 Difference]: Start difference. First operand has 194 places, 198 transitions, 2033 flow. Second operand 8 states and 233 transitions. [2024-05-12 10:42:00,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 247 transitions, 2703 flow [2024-05-12 10:42:00,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 247 transitions, 2584 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-05-12 10:42:00,757 INFO L231 Difference]: Finished difference. Result has 197 places, 201 transitions, 2108 flow [2024-05-12 10:42:00,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2108, PETRI_PLACES=197, PETRI_TRANSITIONS=201} [2024-05-12 10:42:00,757 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 146 predicate places. [2024-05-12 10:42:00,758 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 201 transitions, 2108 flow [2024-05-12 10:42:00,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:00,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:00,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:00,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 10:42:00,758 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:00,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:00,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1025863850, now seen corresponding path program 2 times [2024-05-12 10:42:00,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:00,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363583252] [2024-05-12 10:42:00,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:00,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:01,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:01,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:01,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363583252] [2024-05-12 10:42:01,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363583252] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:01,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:01,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:42:01,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288596421] [2024-05-12 10:42:01,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:01,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:42:01,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:01,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:42:01,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:42:01,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:01,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 201 transitions, 2108 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:01,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:01,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:01,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:01,784 INFO L124 PetriNetUnfolderBase]: 2902/4973 cut-off events. [2024-05-12 10:42:01,784 INFO L125 PetriNetUnfolderBase]: For 125461/125461 co-relation queries the response was YES. [2024-05-12 10:42:01,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26094 conditions, 4973 events. 2902/4973 cut-off events. For 125461/125461 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 33584 event pairs, 690 based on Foata normal form. 12/4971 useless extension candidates. Maximal degree in co-relation 26002. Up to 3886 conditions per place. [2024-05-12 10:42:01,836 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 181 selfloop transitions, 54 changer transitions 0/248 dead transitions. [2024-05-12 10:42:01,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 248 transitions, 2750 flow [2024-05-12 10:42:01,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:42:01,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:42:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 233 transitions. [2024-05-12 10:42:01,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6196808510638298 [2024-05-12 10:42:01,837 INFO L175 Difference]: Start difference. First operand has 197 places, 201 transitions, 2108 flow. Second operand 8 states and 233 transitions. [2024-05-12 10:42:01,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 248 transitions, 2750 flow [2024-05-12 10:42:02,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 248 transitions, 2652 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-05-12 10:42:02,041 INFO L231 Difference]: Finished difference. Result has 201 places, 202 transitions, 2158 flow [2024-05-12 10:42:02,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2158, PETRI_PLACES=201, PETRI_TRANSITIONS=202} [2024-05-12 10:42:02,041 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 150 predicate places. [2024-05-12 10:42:02,041 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 202 transitions, 2158 flow [2024-05-12 10:42:02,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:02,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:02,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:02,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 10:42:02,042 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:02,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:02,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1587724458, now seen corresponding path program 3 times [2024-05-12 10:42:02,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:02,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526610] [2024-05-12 10:42:02,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:02,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:02,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:02,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526610] [2024-05-12 10:42:02,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526610] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:02,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:02,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:42:02,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786624832] [2024-05-12 10:42:02,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:02,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:42:02,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:02,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:42:02,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:42:02,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:02,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 202 transitions, 2158 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:02,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:02,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:02,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:03,185 INFO L124 PetriNetUnfolderBase]: 2969/4926 cut-off events. [2024-05-12 10:42:03,185 INFO L125 PetriNetUnfolderBase]: For 130020/130020 co-relation queries the response was YES. [2024-05-12 10:42:03,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26737 conditions, 4926 events. 2969/4926 cut-off events. For 130020/130020 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 32731 event pairs, 660 based on Foata normal form. 12/4917 useless extension candidates. Maximal degree in co-relation 26643. Up to 2901 conditions per place. [2024-05-12 10:42:03,241 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 172 selfloop transitions, 66 changer transitions 0/251 dead transitions. [2024-05-12 10:42:03,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 251 transitions, 2902 flow [2024-05-12 10:42:03,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:42:03,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:42:03,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 234 transitions. [2024-05-12 10:42:03,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6223404255319149 [2024-05-12 10:42:03,243 INFO L175 Difference]: Start difference. First operand has 201 places, 202 transitions, 2158 flow. Second operand 8 states and 234 transitions. [2024-05-12 10:42:03,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 251 transitions, 2902 flow [2024-05-12 10:42:03,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 251 transitions, 2768 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-05-12 10:42:03,461 INFO L231 Difference]: Finished difference. Result has 203 places, 203 transitions, 2196 flow [2024-05-12 10:42:03,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2196, PETRI_PLACES=203, PETRI_TRANSITIONS=203} [2024-05-12 10:42:03,462 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 152 predicate places. [2024-05-12 10:42:03,462 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 203 transitions, 2196 flow [2024-05-12 10:42:03,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:03,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:03,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:03,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 10:42:03,463 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:03,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:03,463 INFO L85 PathProgramCache]: Analyzing trace with hash -368779740, now seen corresponding path program 4 times [2024-05-12 10:42:03,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:03,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096255868] [2024-05-12 10:42:03,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:03,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:03,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:03,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096255868] [2024-05-12 10:42:03,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096255868] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:03,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:03,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:42:03,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194066105] [2024-05-12 10:42:03,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:03,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:42:03,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:03,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:42:03,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:42:03,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:03,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 203 transitions, 2196 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:03,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:03,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:03,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:04,503 INFO L124 PetriNetUnfolderBase]: 2949/5044 cut-off events. [2024-05-12 10:42:04,504 INFO L125 PetriNetUnfolderBase]: For 122824/122824 co-relation queries the response was YES. [2024-05-12 10:42:04,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26249 conditions, 5044 events. 2949/5044 cut-off events. For 122824/122824 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 34357 event pairs, 943 based on Foata normal form. 12/5000 useless extension candidates. Maximal degree in co-relation 26154. Up to 3831 conditions per place. [2024-05-12 10:42:04,556 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 183 selfloop transitions, 52 changer transitions 0/248 dead transitions. [2024-05-12 10:42:04,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 248 transitions, 2722 flow [2024-05-12 10:42:04,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:42:04,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:42:04,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 233 transitions. [2024-05-12 10:42:04,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6196808510638298 [2024-05-12 10:42:04,558 INFO L175 Difference]: Start difference. First operand has 203 places, 203 transitions, 2196 flow. Second operand 8 states and 233 transitions. [2024-05-12 10:42:04,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 248 transitions, 2722 flow [2024-05-12 10:42:04,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 248 transitions, 2592 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-05-12 10:42:04,760 INFO L231 Difference]: Finished difference. Result has 205 places, 202 transitions, 2090 flow [2024-05-12 10:42:04,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1982, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2090, PETRI_PLACES=205, PETRI_TRANSITIONS=202} [2024-05-12 10:42:04,761 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 154 predicate places. [2024-05-12 10:42:04,761 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 202 transitions, 2090 flow [2024-05-12 10:42:04,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:04,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:04,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:04,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 10:42:04,761 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:04,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:04,761 INFO L85 PathProgramCache]: Analyzing trace with hash 92189439, now seen corresponding path program 1 times [2024-05-12 10:42:04,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:04,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890735017] [2024-05-12 10:42:04,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:04,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:05,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:05,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:05,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890735017] [2024-05-12 10:42:05,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890735017] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:05,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:05,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:05,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379557518] [2024-05-12 10:42:05,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:05,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:05,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:05,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:05,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:05,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:05,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 202 transitions, 2090 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:05,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:05,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:05,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:05,736 INFO L124 PetriNetUnfolderBase]: 2974/4914 cut-off events. [2024-05-12 10:42:05,736 INFO L125 PetriNetUnfolderBase]: For 114392/114395 co-relation queries the response was YES. [2024-05-12 10:42:05,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25966 conditions, 4914 events. 2974/4914 cut-off events. For 114392/114395 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 32472 event pairs, 603 based on Foata normal form. 1/4903 useless extension candidates. Maximal degree in co-relation 25870. Up to 4261 conditions per place. [2024-05-12 10:42:05,790 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 192 selfloop transitions, 48 changer transitions 0/253 dead transitions. [2024-05-12 10:42:05,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 253 transitions, 3022 flow [2024-05-12 10:42:05,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:42:05,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:42:05,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-05-12 10:42:05,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6200607902735562 [2024-05-12 10:42:05,791 INFO L175 Difference]: Start difference. First operand has 205 places, 202 transitions, 2090 flow. Second operand 7 states and 204 transitions. [2024-05-12 10:42:05,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 253 transitions, 3022 flow [2024-05-12 10:42:05,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 253 transitions, 2769 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-05-12 10:42:05,994 INFO L231 Difference]: Finished difference. Result has 203 places, 218 transitions, 2156 flow [2024-05-12 10:42:05,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1837, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2156, PETRI_PLACES=203, PETRI_TRANSITIONS=218} [2024-05-12 10:42:05,995 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 152 predicate places. [2024-05-12 10:42:05,995 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 218 transitions, 2156 flow [2024-05-12 10:42:05,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:05,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:05,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:05,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 10:42:05,995 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:05,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:05,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1495827709, now seen corresponding path program 2 times [2024-05-12 10:42:05,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:05,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329892346] [2024-05-12 10:42:05,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:05,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:06,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:06,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:06,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329892346] [2024-05-12 10:42:06,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329892346] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:06,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:06,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:06,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981276671] [2024-05-12 10:42:06,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:06,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:06,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:06,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:06,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:06,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:06,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 218 transitions, 2156 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:06,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:06,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:06,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:07,009 INFO L124 PetriNetUnfolderBase]: 2996/4941 cut-off events. [2024-05-12 10:42:07,009 INFO L125 PetriNetUnfolderBase]: For 115444/115447 co-relation queries the response was YES. [2024-05-12 10:42:07,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25459 conditions, 4941 events. 2996/4941 cut-off events. For 115444/115447 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 32673 event pairs, 588 based on Foata normal form. 3/4935 useless extension candidates. Maximal degree in co-relation 25364. Up to 4397 conditions per place. [2024-05-12 10:42:07,051 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 206 selfloop transitions, 35 changer transitions 0/254 dead transitions. [2024-05-12 10:42:07,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 254 transitions, 2786 flow [2024-05-12 10:42:07,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:42:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:42:07,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-05-12 10:42:07,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5957446808510638 [2024-05-12 10:42:07,052 INFO L175 Difference]: Start difference. First operand has 203 places, 218 transitions, 2156 flow. Second operand 7 states and 196 transitions. [2024-05-12 10:42:07,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 254 transitions, 2786 flow [2024-05-12 10:42:07,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 254 transitions, 2711 flow, removed 32 selfloop flow, removed 1 redundant places. [2024-05-12 10:42:07,286 INFO L231 Difference]: Finished difference. Result has 209 places, 224 transitions, 2241 flow [2024-05-12 10:42:07,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2241, PETRI_PLACES=209, PETRI_TRANSITIONS=224} [2024-05-12 10:42:07,287 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 158 predicate places. [2024-05-12 10:42:07,287 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 224 transitions, 2241 flow [2024-05-12 10:42:07,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:07,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:07,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:07,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 10:42:07,287 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:07,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:07,287 INFO L85 PathProgramCache]: Analyzing trace with hash 586903051, now seen corresponding path program 1 times [2024-05-12 10:42:07,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:07,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885962370] [2024-05-12 10:42:07,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:07,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:07,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:07,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885962370] [2024-05-12 10:42:07,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885962370] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:07,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:07,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:07,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059750800] [2024-05-12 10:42:07,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:07,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:07,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:07,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:07,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:07,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:07,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 224 transitions, 2241 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:07,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:07,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:07,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:08,262 INFO L124 PetriNetUnfolderBase]: 3021/4991 cut-off events. [2024-05-12 10:42:08,262 INFO L125 PetriNetUnfolderBase]: For 121521/121524 co-relation queries the response was YES. [2024-05-12 10:42:08,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25854 conditions, 4991 events. 3021/4991 cut-off events. For 121521/121524 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 33039 event pairs, 606 based on Foata normal form. 3/4979 useless extension candidates. Maximal degree in co-relation 25756. Up to 4349 conditions per place. [2024-05-12 10:42:08,309 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 209 selfloop transitions, 49 changer transitions 0/271 dead transitions. [2024-05-12 10:42:08,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 271 transitions, 3185 flow [2024-05-12 10:42:08,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:42:08,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:42:08,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 201 transitions. [2024-05-12 10:42:08,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6109422492401215 [2024-05-12 10:42:08,310 INFO L175 Difference]: Start difference. First operand has 209 places, 224 transitions, 2241 flow. Second operand 7 states and 201 transitions. [2024-05-12 10:42:08,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 271 transitions, 3185 flow [2024-05-12 10:42:08,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 271 transitions, 3093 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-05-12 10:42:08,564 INFO L231 Difference]: Finished difference. Result has 213 places, 239 transitions, 2455 flow [2024-05-12 10:42:08,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2149, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2455, PETRI_PLACES=213, PETRI_TRANSITIONS=239} [2024-05-12 10:42:08,564 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 162 predicate places. [2024-05-12 10:42:08,565 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 239 transitions, 2455 flow [2024-05-12 10:42:08,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:08,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:08,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:08,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 10:42:08,565 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:08,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:08,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1318696189, now seen corresponding path program 3 times [2024-05-12 10:42:08,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:08,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29716599] [2024-05-12 10:42:08,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:08,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:08,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:08,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:08,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29716599] [2024-05-12 10:42:08,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29716599] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:08,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:08,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:08,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927078731] [2024-05-12 10:42:08,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:08,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:08,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:08,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:08,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:08,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:08,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 239 transitions, 2455 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:08,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:08,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:08,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:09,598 INFO L124 PetriNetUnfolderBase]: 3068/5246 cut-off events. [2024-05-12 10:42:09,598 INFO L125 PetriNetUnfolderBase]: For 129505/129508 co-relation queries the response was YES. [2024-05-12 10:42:09,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27007 conditions, 5246 events. 3068/5246 cut-off events. For 129505/129508 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 35742 event pairs, 773 based on Foata normal form. 3/5236 useless extension candidates. Maximal degree in co-relation 26907. Up to 4474 conditions per place. [2024-05-12 10:42:09,648 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 222 selfloop transitions, 48 changer transitions 0/283 dead transitions. [2024-05-12 10:42:09,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 283 transitions, 3329 flow [2024-05-12 10:42:09,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:42:09,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:42:09,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-05-12 10:42:09,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771276595744681 [2024-05-12 10:42:09,649 INFO L175 Difference]: Start difference. First operand has 213 places, 239 transitions, 2455 flow. Second operand 8 states and 217 transitions. [2024-05-12 10:42:09,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 283 transitions, 3329 flow [2024-05-12 10:42:09,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 283 transitions, 3266 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-05-12 10:42:09,900 INFO L231 Difference]: Finished difference. Result has 220 places, 252 transitions, 2678 flow [2024-05-12 10:42:09,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2392, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2678, PETRI_PLACES=220, PETRI_TRANSITIONS=252} [2024-05-12 10:42:09,901 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 169 predicate places. [2024-05-12 10:42:09,901 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 252 transitions, 2678 flow [2024-05-12 10:42:09,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:09,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:09,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:09,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 10:42:09,901 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:09,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:09,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1318696003, now seen corresponding path program 2 times [2024-05-12 10:42:09,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:09,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270045429] [2024-05-12 10:42:09,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:09,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:10,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:10,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:10,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270045429] [2024-05-12 10:42:10,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270045429] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:10,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:10,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:10,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891955384] [2024-05-12 10:42:10,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:10,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:10,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:10,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:10,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:10,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:10,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 252 transitions, 2678 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:10,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:10,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:10,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:10,936 INFO L124 PetriNetUnfolderBase]: 3107/5307 cut-off events. [2024-05-12 10:42:10,936 INFO L125 PetriNetUnfolderBase]: For 137153/137156 co-relation queries the response was YES. [2024-05-12 10:42:11,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27776 conditions, 5307 events. 3107/5307 cut-off events. For 137153/137156 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 36183 event pairs, 784 based on Foata normal form. 3/5294 useless extension candidates. Maximal degree in co-relation 27673. Up to 4441 conditions per place. [2024-05-12 10:42:11,080 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 217 selfloop transitions, 61 changer transitions 0/291 dead transitions. [2024-05-12 10:42:11,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 291 transitions, 3735 flow [2024-05-12 10:42:11,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:42:11,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:42:11,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-05-12 10:42:11,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60790273556231 [2024-05-12 10:42:11,088 INFO L175 Difference]: Start difference. First operand has 220 places, 252 transitions, 2678 flow. Second operand 7 states and 200 transitions. [2024-05-12 10:42:11,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 291 transitions, 3735 flow [2024-05-12 10:42:11,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 291 transitions, 3628 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-05-12 10:42:11,350 INFO L231 Difference]: Finished difference. Result has 225 places, 261 transitions, 2826 flow [2024-05-12 10:42:11,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2571, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2826, PETRI_PLACES=225, PETRI_TRANSITIONS=261} [2024-05-12 10:42:11,351 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 174 predicate places. [2024-05-12 10:42:11,351 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 261 transitions, 2826 flow [2024-05-12 10:42:11,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:11,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:11,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:11,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 10:42:11,351 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:11,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:11,351 INFO L85 PathProgramCache]: Analyzing trace with hash 764271721, now seen corresponding path program 3 times [2024-05-12 10:42:11,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:11,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818229436] [2024-05-12 10:42:11,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:11,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:11,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:11,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:11,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818229436] [2024-05-12 10:42:11,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818229436] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:11,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:11,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:11,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438199944] [2024-05-12 10:42:11,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:11,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:11,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:11,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:11,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:11,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:11,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 261 transitions, 2826 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:11,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:11,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:11,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:12,371 INFO L124 PetriNetUnfolderBase]: 3104/5116 cut-off events. [2024-05-12 10:42:12,371 INFO L125 PetriNetUnfolderBase]: For 139632/139635 co-relation queries the response was YES. [2024-05-12 10:42:12,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27607 conditions, 5116 events. 3104/5116 cut-off events. For 139632/139635 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 33953 event pairs, 596 based on Foata normal form. 3/5108 useless extension candidates. Maximal degree in co-relation 27503. Up to 4438 conditions per place. [2024-05-12 10:42:12,421 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 214 selfloop transitions, 63 changer transitions 0/290 dead transitions. [2024-05-12 10:42:12,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 290 transitions, 3654 flow [2024-05-12 10:42:12,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:42:12,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:42:12,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-05-12 10:42:12,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.601823708206687 [2024-05-12 10:42:12,422 INFO L175 Difference]: Start difference. First operand has 225 places, 261 transitions, 2826 flow. Second operand 7 states and 198 transitions. [2024-05-12 10:42:12,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 290 transitions, 3654 flow [2024-05-12 10:42:12,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 290 transitions, 3538 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-05-12 10:42:12,713 INFO L231 Difference]: Finished difference. Result has 230 places, 261 transitions, 2842 flow [2024-05-12 10:42:12,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2710, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2842, PETRI_PLACES=230, PETRI_TRANSITIONS=261} [2024-05-12 10:42:12,713 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 179 predicate places. [2024-05-12 10:42:12,713 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 261 transitions, 2842 flow [2024-05-12 10:42:12,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:12,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:12,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:12,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-05-12 10:42:12,714 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:12,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:12,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1732540411, now seen corresponding path program 1 times [2024-05-12 10:42:12,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:12,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851899307] [2024-05-12 10:42:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:12,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:13,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:13,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851899307] [2024-05-12 10:42:13,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851899307] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:13,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:13,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:13,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130935736] [2024-05-12 10:42:13,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:13,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:13,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:13,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:13,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:13,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:42:13,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 261 transitions, 2842 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:13,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:13,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:42:13,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:13,756 INFO L124 PetriNetUnfolderBase]: 3023/5010 cut-off events. [2024-05-12 10:42:13,756 INFO L125 PetriNetUnfolderBase]: For 156507/156507 co-relation queries the response was YES. [2024-05-12 10:42:13,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27277 conditions, 5010 events. 3023/5010 cut-off events. For 156507/156507 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 33376 event pairs, 560 based on Foata normal form. 10/4966 useless extension candidates. Maximal degree in co-relation 27172. Up to 4206 conditions per place. [2024-05-12 10:42:13,810 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 213 selfloop transitions, 37 changer transitions 0/293 dead transitions. [2024-05-12 10:42:13,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 293 transitions, 3446 flow [2024-05-12 10:42:13,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:42:13,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:42:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-05-12 10:42:13,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60790273556231 [2024-05-12 10:42:13,811 INFO L175 Difference]: Start difference. First operand has 230 places, 261 transitions, 2842 flow. Second operand 7 states and 200 transitions. [2024-05-12 10:42:13,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 293 transitions, 3446 flow [2024-05-12 10:42:14,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 293 transitions, 3313 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-05-12 10:42:14,095 INFO L231 Difference]: Finished difference. Result has 232 places, 262 transitions, 2803 flow [2024-05-12 10:42:14,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2709, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2803, PETRI_PLACES=232, PETRI_TRANSITIONS=262} [2024-05-12 10:42:14,096 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 181 predicate places. [2024-05-12 10:42:14,096 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 262 transitions, 2803 flow [2024-05-12 10:42:14,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:14,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:14,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:14,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-05-12 10:42:14,097 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:14,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:14,097 INFO L85 PathProgramCache]: Analyzing trace with hash 2017599651, now seen corresponding path program 4 times [2024-05-12 10:42:14,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:14,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256970226] [2024-05-12 10:42:14,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:14,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:14,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:14,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256970226] [2024-05-12 10:42:14,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256970226] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:14,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:14,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:14,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406025560] [2024-05-12 10:42:14,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:14,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:14,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:14,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:14,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:14,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:14,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 262 transitions, 2803 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:14,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:14,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:14,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:15,147 INFO L124 PetriNetUnfolderBase]: 3211/5503 cut-off events. [2024-05-12 10:42:15,147 INFO L125 PetriNetUnfolderBase]: For 153368/153368 co-relation queries the response was YES. [2024-05-12 10:42:15,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28846 conditions, 5503 events. 3211/5503 cut-off events. For 153368/153368 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 37898 event pairs, 727 based on Foata normal form. 1/5493 useless extension candidates. Maximal degree in co-relation 28740. Up to 4556 conditions per place. [2024-05-12 10:42:15,203 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 212 selfloop transitions, 75 changer transitions 0/300 dead transitions. [2024-05-12 10:42:15,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 300 transitions, 3767 flow [2024-05-12 10:42:15,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:42:15,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:42:15,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-05-12 10:42:15,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60790273556231 [2024-05-12 10:42:15,204 INFO L175 Difference]: Start difference. First operand has 232 places, 262 transitions, 2803 flow. Second operand 7 states and 200 transitions. [2024-05-12 10:42:15,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 300 transitions, 3767 flow [2024-05-12 10:42:15,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 300 transitions, 3693 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-05-12 10:42:15,576 INFO L231 Difference]: Finished difference. Result has 234 places, 268 transitions, 2985 flow [2024-05-12 10:42:15,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2729, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2985, PETRI_PLACES=234, PETRI_TRANSITIONS=268} [2024-05-12 10:42:15,577 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 183 predicate places. [2024-05-12 10:42:15,577 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 268 transitions, 2985 flow [2024-05-12 10:42:15,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:15,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:15,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:15,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-05-12 10:42:15,577 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:15,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:15,578 INFO L85 PathProgramCache]: Analyzing trace with hash -201606785, now seen corresponding path program 5 times [2024-05-12 10:42:15,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:15,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625895137] [2024-05-12 10:42:15,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:15,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:15,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:15,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625895137] [2024-05-12 10:42:15,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625895137] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:15,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:15,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:15,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619956503] [2024-05-12 10:42:15,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:15,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:15,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:15,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:15,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:15,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:15,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 268 transitions, 2985 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:15,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:15,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:15,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:16,677 INFO L124 PetriNetUnfolderBase]: 3236/5547 cut-off events. [2024-05-12 10:42:16,677 INFO L125 PetriNetUnfolderBase]: For 160397/160397 co-relation queries the response was YES. [2024-05-12 10:42:16,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29406 conditions, 5547 events. 3236/5547 cut-off events. For 160397/160397 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 38273 event pairs, 727 based on Foata normal form. 1/5537 useless extension candidates. Maximal degree in co-relation 29299. Up to 4583 conditions per place. [2024-05-12 10:42:16,740 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 209 selfloop transitions, 82 changer transitions 0/304 dead transitions. [2024-05-12 10:42:16,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 304 transitions, 3978 flow [2024-05-12 10:42:16,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:42:16,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:42:16,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-05-12 10:42:16,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5987841945288754 [2024-05-12 10:42:16,741 INFO L175 Difference]: Start difference. First operand has 234 places, 268 transitions, 2985 flow. Second operand 7 states and 197 transitions. [2024-05-12 10:42:16,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 304 transitions, 3978 flow [2024-05-12 10:42:17,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 304 transitions, 3782 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-05-12 10:42:17,068 INFO L231 Difference]: Finished difference. Result has 238 places, 275 transitions, 3084 flow [2024-05-12 10:42:17,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2824, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3084, PETRI_PLACES=238, PETRI_TRANSITIONS=275} [2024-05-12 10:42:17,069 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 187 predicate places. [2024-05-12 10:42:17,069 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 275 transitions, 3084 flow [2024-05-12 10:42:17,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:17,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:17,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:17,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-05-12 10:42:17,069 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:17,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:17,069 INFO L85 PathProgramCache]: Analyzing trace with hash -457817545, now seen corresponding path program 6 times [2024-05-12 10:42:17,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:17,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215784216] [2024-05-12 10:42:17,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:17,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:17,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:17,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215784216] [2024-05-12 10:42:17,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215784216] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:17,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:17,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:17,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358993815] [2024-05-12 10:42:17,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:17,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:17,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:17,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:17,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:17,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:17,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 275 transitions, 3084 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:17,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:17,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:17,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:18,172 INFO L124 PetriNetUnfolderBase]: 3233/5310 cut-off events. [2024-05-12 10:42:18,172 INFO L125 PetriNetUnfolderBase]: For 161764/161764 co-relation queries the response was YES. [2024-05-12 10:42:18,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29043 conditions, 5310 events. 3233/5310 cut-off events. For 161764/161764 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 35522 event pairs, 604 based on Foata normal form. 1/5303 useless extension candidates. Maximal degree in co-relation 28935. Up to 4580 conditions per place. [2024-05-12 10:42:18,232 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 217 selfloop transitions, 78 changer transitions 0/308 dead transitions. [2024-05-12 10:42:18,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 308 transitions, 4086 flow [2024-05-12 10:42:18,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:42:18,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:42:18,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-05-12 10:42:18,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6139817629179332 [2024-05-12 10:42:18,233 INFO L175 Difference]: Start difference. First operand has 238 places, 275 transitions, 3084 flow. Second operand 7 states and 202 transitions. [2024-05-12 10:42:18,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 308 transitions, 4086 flow [2024-05-12 10:42:18,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 308 transitions, 3930 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-05-12 10:42:18,678 INFO L231 Difference]: Finished difference. Result has 242 places, 275 transitions, 3090 flow [2024-05-12 10:42:18,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2928, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3090, PETRI_PLACES=242, PETRI_TRANSITIONS=275} [2024-05-12 10:42:18,678 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 191 predicate places. [2024-05-12 10:42:18,678 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 275 transitions, 3090 flow [2024-05-12 10:42:18,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:18,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:18,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:18,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-05-12 10:42:18,679 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:18,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:18,679 INFO L85 PathProgramCache]: Analyzing trace with hash -470367299, now seen corresponding path program 4 times [2024-05-12 10:42:18,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:18,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753363551] [2024-05-12 10:42:18,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:18,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:19,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:19,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:19,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753363551] [2024-05-12 10:42:19,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753363551] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:19,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:19,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:19,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857984568] [2024-05-12 10:42:19,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:19,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:19,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:19,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:19,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:19,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:19,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 275 transitions, 3090 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:19,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:19,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:19,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:19,930 INFO L124 PetriNetUnfolderBase]: 3230/5500 cut-off events. [2024-05-12 10:42:19,930 INFO L125 PetriNetUnfolderBase]: For 167282/167282 co-relation queries the response was YES. [2024-05-12 10:42:19,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29202 conditions, 5500 events. 3230/5500 cut-off events. For 167282/167282 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 37842 event pairs, 752 based on Foata normal form. 1/5485 useless extension candidates. Maximal degree in co-relation 29093. Up to 4621 conditions per place. [2024-05-12 10:42:19,981 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 228 selfloop transitions, 65 changer transitions 0/306 dead transitions. [2024-05-12 10:42:19,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 306 transitions, 3999 flow [2024-05-12 10:42:19,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:42:19,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:42:19,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-05-12 10:42:19,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.601823708206687 [2024-05-12 10:42:19,982 INFO L175 Difference]: Start difference. First operand has 242 places, 275 transitions, 3090 flow. Second operand 7 states and 198 transitions. [2024-05-12 10:42:19,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 306 transitions, 3999 flow [2024-05-12 10:42:20,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 306 transitions, 3835 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-05-12 10:42:20,319 INFO L231 Difference]: Finished difference. Result has 245 places, 277 transitions, 3091 flow [2024-05-12 10:42:20,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2930, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3091, PETRI_PLACES=245, PETRI_TRANSITIONS=277} [2024-05-12 10:42:20,319 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 194 predicate places. [2024-05-12 10:42:20,319 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 277 transitions, 3091 flow [2024-05-12 10:42:20,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:20,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:20,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:20,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-05-12 10:42:20,320 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:20,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:20,320 INFO L85 PathProgramCache]: Analyzing trace with hash -470367485, now seen corresponding path program 7 times [2024-05-12 10:42:20,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:20,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264569208] [2024-05-12 10:42:20,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:20,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:20,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:20,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264569208] [2024-05-12 10:42:20,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264569208] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:20,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:20,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:20,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200694819] [2024-05-12 10:42:20,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:20,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:20,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:20,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:20,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:20,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:20,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 277 transitions, 3091 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:20,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:20,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:20,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:21,472 INFO L124 PetriNetUnfolderBase]: 3227/5494 cut-off events. [2024-05-12 10:42:21,472 INFO L125 PetriNetUnfolderBase]: For 169948/169948 co-relation queries the response was YES. [2024-05-12 10:42:21,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29096 conditions, 5494 events. 3227/5494 cut-off events. For 169948/169948 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 37731 event pairs, 739 based on Foata normal form. 1/5480 useless extension candidates. Maximal degree in co-relation 28986. Up to 4716 conditions per place. [2024-05-12 10:42:21,534 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 249 selfloop transitions, 42 changer transitions 0/304 dead transitions. [2024-05-12 10:42:21,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 304 transitions, 3735 flow [2024-05-12 10:42:21,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:42:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:42:21,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-05-12 10:42:21,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5866261398176292 [2024-05-12 10:42:21,535 INFO L175 Difference]: Start difference. First operand has 245 places, 277 transitions, 3091 flow. Second operand 7 states and 193 transitions. [2024-05-12 10:42:21,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 304 transitions, 3735 flow [2024-05-12 10:42:21,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 304 transitions, 3619 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-05-12 10:42:21,903 INFO L231 Difference]: Finished difference. Result has 250 places, 277 transitions, 3065 flow [2024-05-12 10:42:21,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2975, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3065, PETRI_PLACES=250, PETRI_TRANSITIONS=277} [2024-05-12 10:42:21,903 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 199 predicate places. [2024-05-12 10:42:21,904 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 277 transitions, 3065 flow [2024-05-12 10:42:21,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:21,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:21,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:21,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-05-12 10:42:21,904 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:21,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:21,904 INFO L85 PathProgramCache]: Analyzing trace with hash -86315615, now seen corresponding path program 8 times [2024-05-12 10:42:21,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:21,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36193418] [2024-05-12 10:42:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:21,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:22,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:22,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36193418] [2024-05-12 10:42:22,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36193418] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:22,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:22,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:22,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463945823] [2024-05-12 10:42:22,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:22,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:22,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:22,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:22,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:22,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:22,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 277 transitions, 3065 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:22,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:22,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:22,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:23,194 INFO L124 PetriNetUnfolderBase]: 3263/5550 cut-off events. [2024-05-12 10:42:23,194 INFO L125 PetriNetUnfolderBase]: For 176964/176964 co-relation queries the response was YES. [2024-05-12 10:42:23,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29472 conditions, 5550 events. 3263/5550 cut-off events. For 176964/176964 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 38101 event pairs, 744 based on Foata normal form. 1/5539 useless extension candidates. Maximal degree in co-relation 29360. Up to 4733 conditions per place. [2024-05-12 10:42:23,256 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 243 selfloop transitions, 57 changer transitions 0/313 dead transitions. [2024-05-12 10:42:23,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 313 transitions, 3994 flow [2024-05-12 10:42:23,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:42:23,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:42:23,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-05-12 10:42:23,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5835866261398176 [2024-05-12 10:42:23,257 INFO L175 Difference]: Start difference. First operand has 250 places, 277 transitions, 3065 flow. Second operand 7 states and 192 transitions. [2024-05-12 10:42:23,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 313 transitions, 3994 flow [2024-05-12 10:42:23,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 313 transitions, 3896 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-05-12 10:42:23,677 INFO L231 Difference]: Finished difference. Result has 252 places, 288 transitions, 3272 flow [2024-05-12 10:42:23,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2975, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3272, PETRI_PLACES=252, PETRI_TRANSITIONS=288} [2024-05-12 10:42:23,677 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 201 predicate places. [2024-05-12 10:42:23,677 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 288 transitions, 3272 flow [2024-05-12 10:42:23,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:23,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:23,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:23,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-05-12 10:42:23,678 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:23,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:23,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1306579583, now seen corresponding path program 5 times [2024-05-12 10:42:23,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:23,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221897125] [2024-05-12 10:42:23,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:23,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:24,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:24,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:24,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221897125] [2024-05-12 10:42:24,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221897125] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:24,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:24,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:24,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371546448] [2024-05-12 10:42:24,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:24,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:24,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:24,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:24,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:24,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:24,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 288 transitions, 3272 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:24,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:24,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:24,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:24,856 INFO L124 PetriNetUnfolderBase]: 3274/5547 cut-off events. [2024-05-12 10:42:24,856 INFO L125 PetriNetUnfolderBase]: For 181972/181972 co-relation queries the response was YES. [2024-05-12 10:42:24,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29789 conditions, 5547 events. 3274/5547 cut-off events. For 181972/181972 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 38189 event pairs, 1124 based on Foata normal form. 1/5493 useless extension candidates. Maximal degree in co-relation 29675. Up to 4853 conditions per place. [2024-05-12 10:42:24,920 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 277 selfloop transitions, 25 changer transitions 0/315 dead transitions. [2024-05-12 10:42:24,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 315 transitions, 3979 flow [2024-05-12 10:42:24,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:42:24,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:42:24,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-05-12 10:42:24,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-05-12 10:42:24,921 INFO L175 Difference]: Start difference. First operand has 252 places, 288 transitions, 3272 flow. Second operand 7 states and 189 transitions. [2024-05-12 10:42:24,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 315 transitions, 3979 flow [2024-05-12 10:42:25,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 315 transitions, 3881 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-05-12 10:42:25,412 INFO L231 Difference]: Finished difference. Result has 257 places, 291 transitions, 3285 flow [2024-05-12 10:42:25,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3174, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3285, PETRI_PLACES=257, PETRI_TRANSITIONS=291} [2024-05-12 10:42:25,412 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 206 predicate places. [2024-05-12 10:42:25,412 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 291 transitions, 3285 flow [2024-05-12 10:42:25,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:25,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:25,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:25,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-05-12 10:42:25,413 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:25,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:25,413 INFO L85 PathProgramCache]: Analyzing trace with hash -86582339, now seen corresponding path program 6 times [2024-05-12 10:42:25,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:25,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125176117] [2024-05-12 10:42:25,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:25,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:25,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:25,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125176117] [2024-05-12 10:42:25,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125176117] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:25,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:25,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:25,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835851763] [2024-05-12 10:42:25,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:25,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:25,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:25,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:25,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:25,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:25,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 291 transitions, 3285 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:25,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:25,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:25,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:26,605 INFO L124 PetriNetUnfolderBase]: 3285/5601 cut-off events. [2024-05-12 10:42:26,605 INFO L125 PetriNetUnfolderBase]: For 187979/187979 co-relation queries the response was YES. [2024-05-12 10:42:26,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29888 conditions, 5601 events. 3285/5601 cut-off events. For 187979/187979 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 38646 event pairs, 760 based on Foata normal form. 1/5584 useless extension candidates. Maximal degree in co-relation 29773. Up to 4683 conditions per place. [2024-05-12 10:42:26,674 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 234 selfloop transitions, 72 changer transitions 0/319 dead transitions. [2024-05-12 10:42:26,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 319 transitions, 4130 flow [2024-05-12 10:42:26,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:42:26,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:42:26,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-05-12 10:42:26,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5927051671732523 [2024-05-12 10:42:26,675 INFO L175 Difference]: Start difference. First operand has 257 places, 291 transitions, 3285 flow. Second operand 7 states and 195 transitions. [2024-05-12 10:42:26,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 319 transitions, 4130 flow [2024-05-12 10:42:27,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 319 transitions, 4054 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-05-12 10:42:27,152 INFO L231 Difference]: Finished difference. Result has 260 places, 294 transitions, 3414 flow [2024-05-12 10:42:27,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3209, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3414, PETRI_PLACES=260, PETRI_TRANSITIONS=294} [2024-05-12 10:42:27,153 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 209 predicate places. [2024-05-12 10:42:27,154 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 294 transitions, 3414 flow [2024-05-12 10:42:27,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:27,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:27,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:27,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-05-12 10:42:27,154 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:27,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:27,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1772318661, now seen corresponding path program 9 times [2024-05-12 10:42:27,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:27,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112432944] [2024-05-12 10:42:27,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:27,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:27,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:27,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112432944] [2024-05-12 10:42:27,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112432944] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:27,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:27,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:27,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342359448] [2024-05-12 10:42:27,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:27,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:27,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:27,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:27,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:27,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:27,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 294 transitions, 3414 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:27,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:27,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:27,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:28,441 INFO L124 PetriNetUnfolderBase]: 3282/5585 cut-off events. [2024-05-12 10:42:28,442 INFO L125 PetriNetUnfolderBase]: For 192085/192085 co-relation queries the response was YES. [2024-05-12 10:42:28,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30042 conditions, 5585 events. 3282/5585 cut-off events. For 192085/192085 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 38465 event pairs, 739 based on Foata normal form. 1/5571 useless extension candidates. Maximal degree in co-relation 29926. Up to 4760 conditions per place. [2024-05-12 10:42:28,493 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 253 selfloop transitions, 58 changer transitions 0/324 dead transitions. [2024-05-12 10:42:28,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 324 transitions, 4102 flow [2024-05-12 10:42:28,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:42:28,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:42:28,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-05-12 10:42:28,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2024-05-12 10:42:28,494 INFO L175 Difference]: Start difference. First operand has 260 places, 294 transitions, 3414 flow. Second operand 9 states and 237 transitions. [2024-05-12 10:42:28,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 324 transitions, 4102 flow [2024-05-12 10:42:28,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 324 transitions, 3958 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-05-12 10:42:28,971 INFO L231 Difference]: Finished difference. Result has 266 places, 294 transitions, 3392 flow [2024-05-12 10:42:28,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3270, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3392, PETRI_PLACES=266, PETRI_TRANSITIONS=294} [2024-05-12 10:42:28,972 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 215 predicate places. [2024-05-12 10:42:28,972 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 294 transitions, 3392 flow [2024-05-12 10:42:28,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:28,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:28,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:28,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-05-12 10:42:28,972 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:28,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:28,972 INFO L85 PathProgramCache]: Analyzing trace with hash -392032131, now seen corresponding path program 7 times [2024-05-12 10:42:28,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:28,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600990896] [2024-05-12 10:42:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:28,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:29,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:29,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:29,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600990896] [2024-05-12 10:42:29,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600990896] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:29,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:29,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:29,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050085559] [2024-05-12 10:42:29,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:29,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:29,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:29,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:29,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:29,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:29,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 294 transitions, 3392 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:29,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:29,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:29,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:30,177 INFO L124 PetriNetUnfolderBase]: 3304/5610 cut-off events. [2024-05-12 10:42:30,177 INFO L125 PetriNetUnfolderBase]: For 197255/197255 co-relation queries the response was YES. [2024-05-12 10:42:30,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30227 conditions, 5610 events. 3304/5610 cut-off events. For 197255/197255 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 38884 event pairs, 1120 based on Foata normal form. 1/5557 useless extension candidates. Maximal degree in co-relation 30110. Up to 4884 conditions per place. [2024-05-12 10:42:30,242 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 277 selfloop transitions, 31 changer transitions 0/321 dead transitions. [2024-05-12 10:42:30,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 321 transitions, 4142 flow [2024-05-12 10:42:30,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:42:30,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:42:30,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-05-12 10:42:30,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5886524822695035 [2024-05-12 10:42:30,243 INFO L175 Difference]: Start difference. First operand has 266 places, 294 transitions, 3392 flow. Second operand 6 states and 166 transitions. [2024-05-12 10:42:30,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 321 transitions, 4142 flow [2024-05-12 10:42:30,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 321 transitions, 3994 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-05-12 10:42:30,664 INFO L231 Difference]: Finished difference. Result has 263 places, 300 transitions, 3408 flow [2024-05-12 10:42:30,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3244, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3408, PETRI_PLACES=263, PETRI_TRANSITIONS=300} [2024-05-12 10:42:30,665 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 212 predicate places. [2024-05-12 10:42:30,665 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 300 transitions, 3408 flow [2024-05-12 10:42:30,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:30,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:30,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:30,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-05-12 10:42:30,665 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:30,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:30,666 INFO L85 PathProgramCache]: Analyzing trace with hash -399396801, now seen corresponding path program 8 times [2024-05-12 10:42:30,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:30,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105440739] [2024-05-12 10:42:30,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:30,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:31,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:31,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105440739] [2024-05-12 10:42:31,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105440739] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:31,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:31,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:31,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713312435] [2024-05-12 10:42:31,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:31,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:31,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:31,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:31,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:31,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:31,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 300 transitions, 3408 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:31,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:31,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:31,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:31,886 INFO L124 PetriNetUnfolderBase]: 3315/5667 cut-off events. [2024-05-12 10:42:31,886 INFO L125 PetriNetUnfolderBase]: For 203149/203152 co-relation queries the response was YES. [2024-05-12 10:42:31,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30319 conditions, 5667 events. 3315/5667 cut-off events. For 203149/203152 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 39216 event pairs, 814 based on Foata normal form. 3/5653 useless extension candidates. Maximal degree in co-relation 30202. Up to 4711 conditions per place. [2024-05-12 10:42:31,951 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 236 selfloop transitions, 83 changer transitions 0/332 dead transitions. [2024-05-12 10:42:31,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 332 transitions, 4416 flow [2024-05-12 10:42:31,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:42:31,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:42:31,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-05-12 10:42:31,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6312056737588653 [2024-05-12 10:42:31,952 INFO L175 Difference]: Start difference. First operand has 263 places, 300 transitions, 3408 flow. Second operand 6 states and 178 transitions. [2024-05-12 10:42:31,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 332 transitions, 4416 flow [2024-05-12 10:42:32,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 332 transitions, 4340 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-05-12 10:42:32,465 INFO L231 Difference]: Finished difference. Result has 267 places, 303 transitions, 3562 flow [2024-05-12 10:42:32,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3336, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3562, PETRI_PLACES=267, PETRI_TRANSITIONS=303} [2024-05-12 10:42:32,465 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 216 predicate places. [2024-05-12 10:42:32,466 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 303 transitions, 3562 flow [2024-05-12 10:42:32,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:32,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:32,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:32,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-05-12 10:42:32,466 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:32,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:32,466 INFO L85 PathProgramCache]: Analyzing trace with hash 675798039, now seen corresponding path program 9 times [2024-05-12 10:42:32,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:32,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732994988] [2024-05-12 10:42:32,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:32,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:32,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:32,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732994988] [2024-05-12 10:42:32,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732994988] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:32,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:32,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:32,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087737667] [2024-05-12 10:42:32,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:32,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:32,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:32,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:32,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:32,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:32,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 303 transitions, 3562 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:32,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:32,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:32,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:33,634 INFO L124 PetriNetUnfolderBase]: 3340/5492 cut-off events. [2024-05-12 10:42:33,634 INFO L125 PetriNetUnfolderBase]: For 204651/204654 co-relation queries the response was YES. [2024-05-12 10:42:33,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30677 conditions, 5492 events. 3340/5492 cut-off events. For 204651/204654 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 36923 event pairs, 607 based on Foata normal form. 3/5484 useless extension candidates. Maximal degree in co-relation 30559. Up to 4810 conditions per place. [2024-05-12 10:42:33,701 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 257 selfloop transitions, 65 changer transitions 0/335 dead transitions. [2024-05-12 10:42:33,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 335 transitions, 4527 flow [2024-05-12 10:42:33,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:42:33,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:42:33,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 154 transitions. [2024-05-12 10:42:33,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6553191489361702 [2024-05-12 10:42:33,702 INFO L175 Difference]: Start difference. First operand has 267 places, 303 transitions, 3562 flow. Second operand 5 states and 154 transitions. [2024-05-12 10:42:33,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 335 transitions, 4527 flow [2024-05-12 10:42:34,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 335 transitions, 4331 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-05-12 10:42:34,170 INFO L231 Difference]: Finished difference. Result has 267 places, 310 transitions, 3707 flow [2024-05-12 10:42:34,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3381, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3707, PETRI_PLACES=267, PETRI_TRANSITIONS=310} [2024-05-12 10:42:34,171 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 216 predicate places. [2024-05-12 10:42:34,171 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 310 transitions, 3707 flow [2024-05-12 10:42:34,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:34,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:34,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:34,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-05-12 10:42:34,171 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:34,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:34,171 INFO L85 PathProgramCache]: Analyzing trace with hash 245085449, now seen corresponding path program 10 times [2024-05-12 10:42:34,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:34,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181332535] [2024-05-12 10:42:34,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:34,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:34,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:34,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:34,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181332535] [2024-05-12 10:42:34,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181332535] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:34,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:34,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:34,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043211891] [2024-05-12 10:42:34,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:34,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:34,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:34,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:34,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:34,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:34,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 310 transitions, 3707 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:34,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:34,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:34,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:35,358 INFO L124 PetriNetUnfolderBase]: 3337/5498 cut-off events. [2024-05-12 10:42:35,358 INFO L125 PetriNetUnfolderBase]: For 197991/197994 co-relation queries the response was YES. [2024-05-12 10:42:35,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30575 conditions, 5498 events. 3337/5498 cut-off events. For 197991/197994 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 37133 event pairs, 599 based on Foata normal form. 3/5491 useless extension candidates. Maximal degree in co-relation 30458. Up to 4746 conditions per place. [2024-05-12 10:42:35,422 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 256 selfloop transitions, 84 changer transitions 0/353 dead transitions. [2024-05-12 10:42:35,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 353 transitions, 4615 flow [2024-05-12 10:42:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:42:35,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:42:35,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 232 transitions. [2024-05-12 10:42:35,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-05-12 10:42:35,429 INFO L175 Difference]: Start difference. First operand has 267 places, 310 transitions, 3707 flow. Second operand 8 states and 232 transitions. [2024-05-12 10:42:35,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 353 transitions, 4615 flow [2024-05-12 10:42:35,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 353 transitions, 4493 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-05-12 10:42:35,978 INFO L231 Difference]: Finished difference. Result has 272 places, 310 transitions, 3773 flow [2024-05-12 10:42:35,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3587, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3773, PETRI_PLACES=272, PETRI_TRANSITIONS=310} [2024-05-12 10:42:35,978 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 221 predicate places. [2024-05-12 10:42:35,978 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 310 transitions, 3773 flow [2024-05-12 10:42:35,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:35,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:35,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:35,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-05-12 10:42:35,979 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:35,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:35,979 INFO L85 PathProgramCache]: Analyzing trace with hash -391778427, now seen corresponding path program 11 times [2024-05-12 10:42:35,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:35,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982439040] [2024-05-12 10:42:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:35,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:36,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:36,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982439040] [2024-05-12 10:42:36,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982439040] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:36,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:36,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:36,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895873948] [2024-05-12 10:42:36,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:36,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:36,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:36,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:36,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:36,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:36,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 310 transitions, 3773 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:36,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:36,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:36,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:37,198 INFO L124 PetriNetUnfolderBase]: 3334/5476 cut-off events. [2024-05-12 10:42:37,198 INFO L125 PetriNetUnfolderBase]: For 195622/195622 co-relation queries the response was YES. [2024-05-12 10:42:37,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30572 conditions, 5476 events. 3334/5476 cut-off events. For 195622/195622 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 36865 event pairs, 598 based on Foata normal form. 1/5469 useless extension candidates. Maximal degree in co-relation 30455. Up to 4743 conditions per place. [2024-05-12 10:42:37,266 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 244 selfloop transitions, 81 changer transitions 0/338 dead transitions. [2024-05-12 10:42:37,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 338 transitions, 4615 flow [2024-05-12 10:42:37,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:42:37,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:42:37,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-05-12 10:42:37,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624113475177305 [2024-05-12 10:42:37,267 INFO L175 Difference]: Start difference. First operand has 272 places, 310 transitions, 3773 flow. Second operand 6 states and 176 transitions. [2024-05-12 10:42:37,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 338 transitions, 4615 flow [2024-05-12 10:42:37,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 338 transitions, 4405 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-05-12 10:42:37,693 INFO L231 Difference]: Finished difference. Result has 271 places, 310 transitions, 3745 flow [2024-05-12 10:42:37,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3569, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3745, PETRI_PLACES=271, PETRI_TRANSITIONS=310} [2024-05-12 10:42:37,694 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 220 predicate places. [2024-05-12 10:42:37,694 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 310 transitions, 3745 flow [2024-05-12 10:42:37,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:37,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:37,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:37,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-05-12 10:42:37,694 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:37,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:37,694 INFO L85 PathProgramCache]: Analyzing trace with hash 247701369, now seen corresponding path program 10 times [2024-05-12 10:42:37,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:37,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17041430] [2024-05-12 10:42:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:37,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:38,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:38,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17041430] [2024-05-12 10:42:38,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17041430] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:38,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:38,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:38,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183357841] [2024-05-12 10:42:38,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:38,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:38,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:38,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:38,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:38,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:38,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 310 transitions, 3745 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:38,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:38,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:38,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:38,845 INFO L124 PetriNetUnfolderBase]: 3331/5480 cut-off events. [2024-05-12 10:42:38,846 INFO L125 PetriNetUnfolderBase]: For 183229/183232 co-relation queries the response was YES. [2024-05-12 10:42:38,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30293 conditions, 5480 events. 3331/5480 cut-off events. For 183229/183232 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 36956 event pairs, 607 based on Foata normal form. 3/5472 useless extension candidates. Maximal degree in co-relation 30176. Up to 4727 conditions per place. [2024-05-12 10:42:38,912 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 232 selfloop transitions, 91 changer transitions 0/336 dead transitions. [2024-05-12 10:42:38,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 336 transitions, 4695 flow [2024-05-12 10:42:38,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:42:38,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:42:38,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2024-05-12 10:42:38,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-05-12 10:42:38,913 INFO L175 Difference]: Start difference. First operand has 271 places, 310 transitions, 3745 flow. Second operand 6 states and 174 transitions. [2024-05-12 10:42:38,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 336 transitions, 4695 flow [2024-05-12 10:42:39,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 336 transitions, 4469 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-05-12 10:42:39,311 INFO L231 Difference]: Finished difference. Result has 270 places, 310 transitions, 3719 flow [2024-05-12 10:42:39,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3527, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3719, PETRI_PLACES=270, PETRI_TRANSITIONS=310} [2024-05-12 10:42:39,311 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 219 predicate places. [2024-05-12 10:42:39,311 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 310 transitions, 3719 flow [2024-05-12 10:42:39,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:39,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:39,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:39,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-05-12 10:42:39,312 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:39,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:39,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2126073807, now seen corresponding path program 11 times [2024-05-12 10:42:39,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:39,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170252493] [2024-05-12 10:42:39,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:39,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:39,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:39,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:39,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170252493] [2024-05-12 10:42:39,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170252493] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:39,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:39,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:39,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627995306] [2024-05-12 10:42:39,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:39,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:39,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:39,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:39,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:39,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:39,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 310 transitions, 3719 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:39,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:39,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:39,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:40,601 INFO L124 PetriNetUnfolderBase]: 3328/5686 cut-off events. [2024-05-12 10:42:40,601 INFO L125 PetriNetUnfolderBase]: For 179177/179177 co-relation queries the response was YES. [2024-05-12 10:42:40,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30281 conditions, 5686 events. 3328/5686 cut-off events. For 179177/179177 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 39482 event pairs, 764 based on Foata normal form. 1/5668 useless extension candidates. Maximal degree in co-relation 30164. Up to 4724 conditions per place. [2024-05-12 10:42:40,660 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 232 selfloop transitions, 90 changer transitions 0/335 dead transitions. [2024-05-12 10:42:40,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 335 transitions, 4541 flow [2024-05-12 10:42:40,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:42:40,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:42:40,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2024-05-12 10:42:40,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-05-12 10:42:40,661 INFO L175 Difference]: Start difference. First operand has 270 places, 310 transitions, 3719 flow. Second operand 6 states and 174 transitions. [2024-05-12 10:42:40,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 335 transitions, 4541 flow [2024-05-12 10:42:41,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 335 transitions, 4257 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-05-12 10:42:41,039 INFO L231 Difference]: Finished difference. Result has 270 places, 310 transitions, 3631 flow [2024-05-12 10:42:41,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3437, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3631, PETRI_PLACES=270, PETRI_TRANSITIONS=310} [2024-05-12 10:42:41,040 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 219 predicate places. [2024-05-12 10:42:41,040 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 310 transitions, 3631 flow [2024-05-12 10:42:41,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:41,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:41,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:41,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-05-12 10:42:41,040 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:41,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:41,041 INFO L85 PathProgramCache]: Analyzing trace with hash 454117473, now seen corresponding path program 12 times [2024-05-12 10:42:41,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:41,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096526399] [2024-05-12 10:42:41,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:41,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:41,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:41,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096526399] [2024-05-12 10:42:41,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096526399] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:41,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:41,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:41,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485995804] [2024-05-12 10:42:41,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:41,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:41,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:41,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:41,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:41,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:41,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 310 transitions, 3631 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:41,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:41,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:41,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:42,287 INFO L124 PetriNetUnfolderBase]: 3325/5713 cut-off events. [2024-05-12 10:42:42,287 INFO L125 PetriNetUnfolderBase]: For 175744/175744 co-relation queries the response was YES. [2024-05-12 10:42:42,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29980 conditions, 5713 events. 3325/5713 cut-off events. For 175744/175744 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 39771 event pairs, 726 based on Foata normal form. 1/5704 useless extension candidates. Maximal degree in co-relation 29864. Up to 4732 conditions per place. [2024-05-12 10:42:42,354 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 252 selfloop transitions, 84 changer transitions 0/349 dead transitions. [2024-05-12 10:42:42,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 349 transitions, 4395 flow [2024-05-12 10:42:42,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:42:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:42:42,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 229 transitions. [2024-05-12 10:42:42,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6090425531914894 [2024-05-12 10:42:42,355 INFO L175 Difference]: Start difference. First operand has 270 places, 310 transitions, 3631 flow. Second operand 8 states and 229 transitions. [2024-05-12 10:42:42,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 349 transitions, 4395 flow [2024-05-12 10:42:42,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 349 transitions, 4225 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-05-12 10:42:42,748 INFO L231 Difference]: Finished difference. Result has 273 places, 310 transitions, 3647 flow [2024-05-12 10:42:42,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3461, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3647, PETRI_PLACES=273, PETRI_TRANSITIONS=310} [2024-05-12 10:42:42,749 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 222 predicate places. [2024-05-12 10:42:42,749 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 310 transitions, 3647 flow [2024-05-12 10:42:42,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:42,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:42,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:42,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-05-12 10:42:42,749 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:42,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:42,750 INFO L85 PathProgramCache]: Analyzing trace with hash 682464279, now seen corresponding path program 12 times [2024-05-12 10:42:42,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:42,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186142325] [2024-05-12 10:42:42,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:42,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:43,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:43,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:43,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186142325] [2024-05-12 10:42:43,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186142325] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:43,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:43,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:43,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385496609] [2024-05-12 10:42:43,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:43,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:43,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:43,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:43,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:43,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:43,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 310 transitions, 3647 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:43,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:43,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:43,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:44,011 INFO L124 PetriNetUnfolderBase]: 3322/5747 cut-off events. [2024-05-12 10:42:44,011 INFO L125 PetriNetUnfolderBase]: For 168354/168354 co-relation queries the response was YES. [2024-05-12 10:42:44,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29880 conditions, 5747 events. 3322/5747 cut-off events. For 168354/168354 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 40242 event pairs, 838 based on Foata normal form. 1/5738 useless extension candidates. Maximal degree in co-relation 29765. Up to 4787 conditions per place. [2024-05-12 10:42:44,076 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 265 selfloop transitions, 68 changer transitions 0/346 dead transitions. [2024-05-12 10:42:44,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 346 transitions, 4399 flow [2024-05-12 10:42:44,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:42:44,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:42:44,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 207 transitions. [2024-05-12 10:42:44,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6291793313069909 [2024-05-12 10:42:44,077 INFO L175 Difference]: Start difference. First operand has 273 places, 310 transitions, 3647 flow. Second operand 7 states and 207 transitions. [2024-05-12 10:42:44,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 346 transitions, 4399 flow [2024-05-12 10:42:44,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 346 transitions, 4197 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-05-12 10:42:44,485 INFO L231 Difference]: Finished difference. Result has 270 places, 310 transitions, 3609 flow [2024-05-12 10:42:44,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3445, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3609, PETRI_PLACES=270, PETRI_TRANSITIONS=310} [2024-05-12 10:42:44,486 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 219 predicate places. [2024-05-12 10:42:44,486 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 310 transitions, 3609 flow [2024-05-12 10:42:44,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:44,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:44,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:44,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-05-12 10:42:44,487 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:44,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:44,487 INFO L85 PathProgramCache]: Analyzing trace with hash 675806967, now seen corresponding path program 2 times [2024-05-12 10:42:44,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:44,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674293525] [2024-05-12 10:42:44,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:44,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:44,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:44,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:44,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674293525] [2024-05-12 10:42:44,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674293525] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:44,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:44,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:44,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423338504] [2024-05-12 10:42:44,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:44,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:44,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:44,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:44,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:44,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:42:44,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 310 transitions, 3609 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:44,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:44,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:42:44,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:45,708 INFO L124 PetriNetUnfolderBase]: 3231/5483 cut-off events. [2024-05-12 10:42:45,708 INFO L125 PetriNetUnfolderBase]: For 173071/173073 co-relation queries the response was YES. [2024-05-12 10:42:45,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28965 conditions, 5483 events. 3231/5483 cut-off events. For 173071/173073 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 38030 event pairs, 940 based on Foata normal form. 11/5397 useless extension candidates. Maximal degree in co-relation 28852. Up to 4439 conditions per place. [2024-05-12 10:42:45,768 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 250 selfloop transitions, 30 changer transitions 0/339 dead transitions. [2024-05-12 10:42:45,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 339 transitions, 4271 flow [2024-05-12 10:42:45,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:42:45,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:42:45,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2024-05-12 10:42:45,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6680851063829787 [2024-05-12 10:42:45,769 INFO L175 Difference]: Start difference. First operand has 270 places, 310 transitions, 3609 flow. Second operand 5 states and 157 transitions. [2024-05-12 10:42:45,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 339 transitions, 4271 flow [2024-05-12 10:42:46,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 339 transitions, 4091 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-05-12 10:42:46,171 INFO L231 Difference]: Finished difference. Result has 268 places, 311 transitions, 3517 flow [2024-05-12 10:42:46,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3429, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3517, PETRI_PLACES=268, PETRI_TRANSITIONS=311} [2024-05-12 10:42:46,172 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 217 predicate places. [2024-05-12 10:42:46,172 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 311 transitions, 3517 flow [2024-05-12 10:42:46,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:46,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:46,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:46,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-05-12 10:42:46,172 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:46,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:46,173 INFO L85 PathProgramCache]: Analyzing trace with hash 138325065, now seen corresponding path program 3 times [2024-05-12 10:42:46,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:46,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903568458] [2024-05-12 10:42:46,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:46,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:46,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:46,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:46,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903568458] [2024-05-12 10:42:46,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903568458] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:46,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:46,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:46,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137740995] [2024-05-12 10:42:46,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:46,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:46,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:46,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:46,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:46,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:42:46,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 311 transitions, 3517 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:46,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:46,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:42:46,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:47,299 INFO L124 PetriNetUnfolderBase]: 3302/5496 cut-off events. [2024-05-12 10:42:47,299 INFO L125 PetriNetUnfolderBase]: For 167800/167808 co-relation queries the response was YES. [2024-05-12 10:42:47,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29327 conditions, 5496 events. 3302/5496 cut-off events. For 167800/167808 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 37547 event pairs, 786 based on Foata normal form. 16/5447 useless extension candidates. Maximal degree in co-relation 29214. Up to 4471 conditions per place. [2024-05-12 10:42:47,358 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 243 selfloop transitions, 38 changer transitions 0/340 dead transitions. [2024-05-12 10:42:47,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 340 transitions, 4181 flow [2024-05-12 10:42:47,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:42:47,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:42:47,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-05-12 10:42:47,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624113475177305 [2024-05-12 10:42:47,359 INFO L175 Difference]: Start difference. First operand has 268 places, 311 transitions, 3517 flow. Second operand 6 states and 176 transitions. [2024-05-12 10:42:47,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 340 transitions, 4181 flow [2024-05-12 10:42:47,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 340 transitions, 4127 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-05-12 10:42:47,750 INFO L231 Difference]: Finished difference. Result has 271 places, 312 transitions, 3567 flow [2024-05-12 10:42:47,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3463, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3567, PETRI_PLACES=271, PETRI_TRANSITIONS=312} [2024-05-12 10:42:47,751 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 220 predicate places. [2024-05-12 10:42:47,751 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 312 transitions, 3567 flow [2024-05-12 10:42:47,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:47,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:47,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:47,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-05-12 10:42:47,751 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:47,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:47,752 INFO L85 PathProgramCache]: Analyzing trace with hash 151284615, now seen corresponding path program 4 times [2024-05-12 10:42:47,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:47,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730781908] [2024-05-12 10:42:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:47,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:48,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:48,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:48,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730781908] [2024-05-12 10:42:48,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730781908] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:48,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:48,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:48,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798289167] [2024-05-12 10:42:48,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:48,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:48,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:48,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:48,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:48,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:42:48,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 312 transitions, 3567 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:48,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:48,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:42:48,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:48,955 INFO L124 PetriNetUnfolderBase]: 3313/5633 cut-off events. [2024-05-12 10:42:48,955 INFO L125 PetriNetUnfolderBase]: For 164930/164932 co-relation queries the response was YES. [2024-05-12 10:42:48,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29528 conditions, 5633 events. 3313/5633 cut-off events. For 164930/164932 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 39483 event pairs, 956 based on Foata normal form. 10/5545 useless extension candidates. Maximal degree in co-relation 29414. Up to 4499 conditions per place. [2024-05-12 10:42:49,016 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 255 selfloop transitions, 33 changer transitions 0/347 dead transitions. [2024-05-12 10:42:49,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 347 transitions, 4273 flow [2024-05-12 10:42:49,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:42:49,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:42:49,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-05-12 10:42:49,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.648936170212766 [2024-05-12 10:42:49,017 INFO L175 Difference]: Start difference. First operand has 271 places, 312 transitions, 3567 flow. Second operand 6 states and 183 transitions. [2024-05-12 10:42:49,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 347 transitions, 4273 flow [2024-05-12 10:42:49,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 347 transitions, 4193 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-05-12 10:42:49,353 INFO L231 Difference]: Finished difference. Result has 273 places, 313 transitions, 3577 flow [2024-05-12 10:42:49,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3489, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3577, PETRI_PLACES=273, PETRI_TRANSITIONS=313} [2024-05-12 10:42:49,353 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 222 predicate places. [2024-05-12 10:42:49,354 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 313 transitions, 3577 flow [2024-05-12 10:42:49,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:49,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:49,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:49,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-05-12 10:42:49,354 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:49,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:49,354 INFO L85 PathProgramCache]: Analyzing trace with hash -204453825, now seen corresponding path program 1 times [2024-05-12 10:42:49,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:49,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182908012] [2024-05-12 10:42:49,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:49,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:49,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:49,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:49,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182908012] [2024-05-12 10:42:49,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182908012] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:49,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:49,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:49,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13741274] [2024-05-12 10:42:49,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:49,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:49,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:49,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:49,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:49,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:42:49,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 313 transitions, 3577 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:49,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:49,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:42:49,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:50,578 INFO L124 PetriNetUnfolderBase]: 3473/5925 cut-off events. [2024-05-12 10:42:50,579 INFO L125 PetriNetUnfolderBase]: For 178202/178214 co-relation queries the response was YES. [2024-05-12 10:42:50,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31235 conditions, 5925 events. 3473/5925 cut-off events. For 178202/178214 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 41808 event pairs, 1068 based on Foata normal form. 20/5893 useless extension candidates. Maximal degree in co-relation 31120. Up to 4759 conditions per place. [2024-05-12 10:42:50,643 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 259 selfloop transitions, 44 changer transitions 0/353 dead transitions. [2024-05-12 10:42:50,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 353 transitions, 4443 flow [2024-05-12 10:42:50,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:42:50,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:42:50,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 205 transitions. [2024-05-12 10:42:50,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6231003039513677 [2024-05-12 10:42:50,644 INFO L175 Difference]: Start difference. First operand has 273 places, 313 transitions, 3577 flow. Second operand 7 states and 205 transitions. [2024-05-12 10:42:50,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 353 transitions, 4443 flow [2024-05-12 10:42:51,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 353 transitions, 4369 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-05-12 10:42:51,053 INFO L231 Difference]: Finished difference. Result has 276 places, 315 transitions, 3625 flow [2024-05-12 10:42:51,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3503, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3625, PETRI_PLACES=276, PETRI_TRANSITIONS=315} [2024-05-12 10:42:51,053 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 225 predicate places. [2024-05-12 10:42:51,054 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 315 transitions, 3625 flow [2024-05-12 10:42:51,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:51,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:51,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:51,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-05-12 10:42:51,054 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:51,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:51,054 INFO L85 PathProgramCache]: Analyzing trace with hash -201596865, now seen corresponding path program 2 times [2024-05-12 10:42:51,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:51,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946726762] [2024-05-12 10:42:51,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:51,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:51,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:51,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:51,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946726762] [2024-05-12 10:42:51,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946726762] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:51,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:51,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:51,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349559989] [2024-05-12 10:42:51,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:51,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:51,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:51,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:51,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:51,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:42:51,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 315 transitions, 3625 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:51,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:51,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:42:51,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:52,324 INFO L124 PetriNetUnfolderBase]: 3557/5910 cut-off events. [2024-05-12 10:42:52,324 INFO L125 PetriNetUnfolderBase]: For 185654/185654 co-relation queries the response was YES. [2024-05-12 10:42:52,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31823 conditions, 5910 events. 3557/5910 cut-off events. For 185654/185654 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 40841 event pairs, 612 based on Foata normal form. 10/5914 useless extension candidates. Maximal degree in co-relation 31707. Up to 4998 conditions per place. [2024-05-12 10:42:52,380 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 255 selfloop transitions, 42 changer transitions 0/347 dead transitions. [2024-05-12 10:42:52,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 347 transitions, 4327 flow [2024-05-12 10:42:52,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:42:52,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:42:52,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-05-12 10:42:52,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6048632218844985 [2024-05-12 10:42:52,381 INFO L175 Difference]: Start difference. First operand has 276 places, 315 transitions, 3625 flow. Second operand 7 states and 199 transitions. [2024-05-12 10:42:52,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 347 transitions, 4327 flow [2024-05-12 10:42:52,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 347 transitions, 4272 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-05-12 10:42:52,731 INFO L231 Difference]: Finished difference. Result has 280 places, 316 transitions, 3678 flow [2024-05-12 10:42:52,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3570, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3678, PETRI_PLACES=280, PETRI_TRANSITIONS=316} [2024-05-12 10:42:52,731 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 229 predicate places. [2024-05-12 10:42:52,731 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 316 transitions, 3678 flow [2024-05-12 10:42:52,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:52,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:52,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:52,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-05-12 10:42:52,732 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:52,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:52,732 INFO L85 PathProgramCache]: Analyzing trace with hash -86305695, now seen corresponding path program 3 times [2024-05-12 10:42:52,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:52,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637285584] [2024-05-12 10:42:52,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:52,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:53,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:53,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637285584] [2024-05-12 10:42:53,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637285584] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:53,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:53,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:53,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081296310] [2024-05-12 10:42:53,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:53,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:53,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:53,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:53,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:53,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:42:53,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 316 transitions, 3678 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:53,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:53,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:42:53,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:53,979 INFO L124 PetriNetUnfolderBase]: 3632/6025 cut-off events. [2024-05-12 10:42:53,980 INFO L125 PetriNetUnfolderBase]: For 192566/192566 co-relation queries the response was YES. [2024-05-12 10:42:54,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32770 conditions, 6025 events. 3632/6025 cut-off events. For 192566/192566 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 41811 event pairs, 620 based on Foata normal form. 10/6029 useless extension candidates. Maximal degree in co-relation 32652. Up to 5150 conditions per place. [2024-05-12 10:42:54,047 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 265 selfloop transitions, 30 changer transitions 0/345 dead transitions. [2024-05-12 10:42:54,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 345 transitions, 4370 flow [2024-05-12 10:42:54,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:42:54,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:42:54,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-05-12 10:42:54,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5927051671732523 [2024-05-12 10:42:54,048 INFO L175 Difference]: Start difference. First operand has 280 places, 316 transitions, 3678 flow. Second operand 7 states and 195 transitions. [2024-05-12 10:42:54,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 345 transitions, 4370 flow [2024-05-12 10:42:54,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 345 transitions, 4286 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-05-12 10:42:54,444 INFO L231 Difference]: Finished difference. Result has 282 places, 317 transitions, 3680 flow [2024-05-12 10:42:54,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3594, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3680, PETRI_PLACES=282, PETRI_TRANSITIONS=317} [2024-05-12 10:42:54,444 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 231 predicate places. [2024-05-12 10:42:54,444 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 317 transitions, 3680 flow [2024-05-12 10:42:54,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:54,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:54,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:54,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-05-12 10:42:54,444 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:54,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:54,445 INFO L85 PathProgramCache]: Analyzing trace with hash -86120997, now seen corresponding path program 1 times [2024-05-12 10:42:54,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:54,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168003116] [2024-05-12 10:42:54,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:54,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:54,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:54,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168003116] [2024-05-12 10:42:54,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168003116] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:54,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:54,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:54,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217159621] [2024-05-12 10:42:54,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:54,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:54,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:54,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:54,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:54,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:54,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 317 transitions, 3680 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:54,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:54,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:54,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:55,703 INFO L124 PetriNetUnfolderBase]: 3809/6212 cut-off events. [2024-05-12 10:42:55,703 INFO L125 PetriNetUnfolderBase]: For 183168/183168 co-relation queries the response was YES. [2024-05-12 10:42:55,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33711 conditions, 6212 events. 3809/6212 cut-off events. For 183168/183168 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 42560 event pairs, 657 based on Foata normal form. 2/6209 useless extension candidates. Maximal degree in co-relation 33592. Up to 5638 conditions per place. [2024-05-12 10:42:55,773 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 304 selfloop transitions, 27 changer transitions 0/344 dead transitions. [2024-05-12 10:42:55,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 344 transitions, 4432 flow [2024-05-12 10:42:55,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:42:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:42:55,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-05-12 10:42:55,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-05-12 10:42:55,774 INFO L175 Difference]: Start difference. First operand has 282 places, 317 transitions, 3680 flow. Second operand 7 states and 189 transitions. [2024-05-12 10:42:55,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 344 transitions, 4432 flow [2024-05-12 10:42:56,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 344 transitions, 4370 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-05-12 10:42:56,217 INFO L231 Difference]: Finished difference. Result has 284 places, 319 transitions, 3715 flow [2024-05-12 10:42:56,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3618, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3715, PETRI_PLACES=284, PETRI_TRANSITIONS=319} [2024-05-12 10:42:56,218 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 233 predicate places. [2024-05-12 10:42:56,218 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 319 transitions, 3715 flow [2024-05-12 10:42:56,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:56,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:56,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:56,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-05-12 10:42:56,218 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:56,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:56,218 INFO L85 PathProgramCache]: Analyzing trace with hash 454394303, now seen corresponding path program 4 times [2024-05-12 10:42:56,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:56,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96905295] [2024-05-12 10:42:56,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:56,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:56,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:56,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96905295] [2024-05-12 10:42:56,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96905295] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:56,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:56,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:56,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238570348] [2024-05-12 10:42:56,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:56,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:56,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:56,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:56,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:56,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-05-12 10:42:56,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 319 transitions, 3715 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:56,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:56,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-05-12 10:42:56,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:57,496 INFO L124 PetriNetUnfolderBase]: 3630/6028 cut-off events. [2024-05-12 10:42:57,496 INFO L125 PetriNetUnfolderBase]: For 184825/184825 co-relation queries the response was YES. [2024-05-12 10:42:57,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32260 conditions, 6028 events. 3630/6028 cut-off events. For 184825/184825 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 41904 event pairs, 569 based on Foata normal form. 10/6032 useless extension candidates. Maximal degree in co-relation 32140. Up to 5002 conditions per place. [2024-05-12 10:42:57,566 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 260 selfloop transitions, 40 changer transitions 0/350 dead transitions. [2024-05-12 10:42:57,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 350 transitions, 4409 flow [2024-05-12 10:42:57,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:42:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:42:57,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-05-12 10:42:57,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6347517730496454 [2024-05-12 10:42:57,567 INFO L175 Difference]: Start difference. First operand has 284 places, 319 transitions, 3715 flow. Second operand 6 states and 179 transitions. [2024-05-12 10:42:57,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 350 transitions, 4409 flow [2024-05-12 10:42:58,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 350 transitions, 4326 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-05-12 10:42:58,060 INFO L231 Difference]: Finished difference. Result has 285 places, 319 transitions, 3725 flow [2024-05-12 10:42:58,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3632, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3725, PETRI_PLACES=285, PETRI_TRANSITIONS=319} [2024-05-12 10:42:58,061 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 234 predicate places. [2024-05-12 10:42:58,061 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 319 transitions, 3725 flow [2024-05-12 10:42:58,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:58,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:58,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:58,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-05-12 10:42:58,061 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:58,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:58,062 INFO L85 PathProgramCache]: Analyzing trace with hash -385327699, now seen corresponding path program 2 times [2024-05-12 10:42:58,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:58,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298954907] [2024-05-12 10:42:58,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:58,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:58,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:58,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298954907] [2024-05-12 10:42:58,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298954907] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:58,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:58,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:42:58,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087277792] [2024-05-12 10:42:58,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:58,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:42:58,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:58,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:42:58,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:42:58,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:42:58,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 319 transitions, 3725 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:58,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:58,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:42:58,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:59,291 INFO L124 PetriNetUnfolderBase]: 3804/6441 cut-off events. [2024-05-12 10:42:59,292 INFO L125 PetriNetUnfolderBase]: For 177905/177905 co-relation queries the response was YES. [2024-05-12 10:42:59,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33542 conditions, 6441 events. 3804/6441 cut-off events. For 177905/177905 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 45763 event pairs, 1310 based on Foata normal form. 2/6379 useless extension candidates. Maximal degree in co-relation 33421. Up to 5613 conditions per place. [2024-05-12 10:42:59,364 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 300 selfloop transitions, 27 changer transitions 0/340 dead transitions. [2024-05-12 10:42:59,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 340 transitions, 4461 flow [2024-05-12 10:42:59,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:42:59,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:42:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-05-12 10:42:59,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6085106382978723 [2024-05-12 10:42:59,365 INFO L175 Difference]: Start difference. First operand has 285 places, 319 transitions, 3725 flow. Second operand 5 states and 143 transitions. [2024-05-12 10:42:59,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 340 transitions, 4461 flow [2024-05-12 10:42:59,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 340 transitions, 4373 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-05-12 10:42:59,868 INFO L231 Difference]: Finished difference. Result has 285 places, 321 transitions, 3742 flow [2024-05-12 10:42:59,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3637, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3742, PETRI_PLACES=285, PETRI_TRANSITIONS=321} [2024-05-12 10:42:59,869 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 234 predicate places. [2024-05-12 10:42:59,869 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 321 transitions, 3742 flow [2024-05-12 10:42:59,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:59,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:59,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:59,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-05-12 10:42:59,869 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:59,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:59,870 INFO L85 PathProgramCache]: Analyzing trace with hash 691051031, now seen corresponding path program 3 times [2024-05-12 10:42:59,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:59,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656101196] [2024-05-12 10:42:59,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:59,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:00,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:00,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:00,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656101196] [2024-05-12 10:43:00,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656101196] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:00,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:00,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:43:00,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583942399] [2024-05-12 10:43:00,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:00,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:43:00,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:00,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:43:00,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:43:00,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:00,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 321 transitions, 3742 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:00,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:00,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:00,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:01,161 INFO L124 PetriNetUnfolderBase]: 3799/6215 cut-off events. [2024-05-12 10:43:01,162 INFO L125 PetriNetUnfolderBase]: For 171450/171453 co-relation queries the response was YES. [2024-05-12 10:43:01,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33105 conditions, 6215 events. 3799/6215 cut-off events. For 171450/171453 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 42623 event pairs, 641 based on Foata normal form. 4/6204 useless extension candidates. Maximal degree in co-relation 32983. Up to 5574 conditions per place. [2024-05-12 10:43:01,222 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 299 selfloop transitions, 28 changer transitions 0/340 dead transitions. [2024-05-12 10:43:01,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 340 transitions, 4476 flow [2024-05-12 10:43:01,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:43:01,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:43:01,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-05-12 10:43:01,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5957446808510638 [2024-05-12 10:43:01,223 INFO L175 Difference]: Start difference. First operand has 285 places, 321 transitions, 3742 flow. Second operand 5 states and 140 transitions. [2024-05-12 10:43:01,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 340 transitions, 4476 flow [2024-05-12 10:43:01,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 340 transitions, 4389 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-05-12 10:43:01,733 INFO L231 Difference]: Finished difference. Result has 287 places, 323 transitions, 3762 flow [2024-05-12 10:43:01,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3659, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3762, PETRI_PLACES=287, PETRI_TRANSITIONS=323} [2024-05-12 10:43:01,733 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 236 predicate places. [2024-05-12 10:43:01,733 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 323 transitions, 3762 flow [2024-05-12 10:43:01,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:01,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:01,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:01,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-05-12 10:43:01,734 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:01,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:01,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1035001250, now seen corresponding path program 1 times [2024-05-12 10:43:01,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:01,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255606001] [2024-05-12 10:43:01,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:01,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:01,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:01,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:01,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255606001] [2024-05-12 10:43:01,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255606001] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:01,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:01,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:43:01,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586295445] [2024-05-12 10:43:01,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:01,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:43:01,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:01,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:43:01,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:43:01,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2024-05-12 10:43:01,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 323 transitions, 3762 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:01,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:01,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2024-05-12 10:43:01,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:02,502 INFO L124 PetriNetUnfolderBase]: 2446/5414 cut-off events. [2024-05-12 10:43:02,502 INFO L125 PetriNetUnfolderBase]: For 89575/89719 co-relation queries the response was YES. [2024-05-12 10:43:02,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21307 conditions, 5414 events. 2446/5414 cut-off events. For 89575/89719 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 47869 event pairs, 350 based on Foata normal form. 250/5313 useless extension candidates. Maximal degree in co-relation 21184. Up to 2117 conditions per place. [2024-05-12 10:43:02,562 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 32 selfloop transitions, 76 changer transitions 0/340 dead transitions. [2024-05-12 10:43:02,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 340 transitions, 4084 flow [2024-05-12 10:43:02,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:43:02,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:43:02,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-05-12 10:43:02,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7393617021276596 [2024-05-12 10:43:02,563 INFO L175 Difference]: Start difference. First operand has 287 places, 323 transitions, 3762 flow. Second operand 4 states and 139 transitions. [2024-05-12 10:43:02,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 340 transitions, 4084 flow [2024-05-12 10:43:02,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 340 transitions, 3997 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-05-12 10:43:02,841 INFO L231 Difference]: Finished difference. Result has 289 places, 327 transitions, 4031 flow [2024-05-12 10:43:02,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3675, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4031, PETRI_PLACES=289, PETRI_TRANSITIONS=327} [2024-05-12 10:43:02,841 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 238 predicate places. [2024-05-12 10:43:02,842 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 327 transitions, 4031 flow [2024-05-12 10:43:02,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:02,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:02,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:02,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-05-12 10:43:02,842 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:02,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:02,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1319718220, now seen corresponding path program 1 times [2024-05-12 10:43:02,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:02,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097216535] [2024-05-12 10:43:02,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:02,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:03,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:03,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097216535] [2024-05-12 10:43:03,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097216535] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:03,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:03,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:03,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547322399] [2024-05-12 10:43:03,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:03,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:03,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:03,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:03,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:03,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:03,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 327 transitions, 4031 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:03,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:03,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:03,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:04,222 INFO L124 PetriNetUnfolderBase]: 3768/6448 cut-off events. [2024-05-12 10:43:04,222 INFO L125 PetriNetUnfolderBase]: For 179177/179252 co-relation queries the response was YES. [2024-05-12 10:43:04,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35125 conditions, 6448 events. 3768/6448 cut-off events. For 179177/179252 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 46070 event pairs, 1243 based on Foata normal form. 21/6229 useless extension candidates. Maximal degree in co-relation 35000. Up to 5507 conditions per place. [2024-05-12 10:43:04,287 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 219 selfloop transitions, 129 changer transitions 0/362 dead transitions. [2024-05-12 10:43:04,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 362 transitions, 5189 flow [2024-05-12 10:43:04,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:43:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:43:04,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-05-12 10:43:04,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5824468085106383 [2024-05-12 10:43:04,288 INFO L175 Difference]: Start difference. First operand has 289 places, 327 transitions, 4031 flow. Second operand 8 states and 219 transitions. [2024-05-12 10:43:04,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 362 transitions, 5189 flow [2024-05-12 10:43:04,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 362 transitions, 5187 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 10:43:04,734 INFO L231 Difference]: Finished difference. Result has 296 places, 336 transitions, 4449 flow [2024-05-12 10:43:04,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4029, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4449, PETRI_PLACES=296, PETRI_TRANSITIONS=336} [2024-05-12 10:43:04,735 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 245 predicate places. [2024-05-12 10:43:04,735 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 336 transitions, 4449 flow [2024-05-12 10:43:04,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:04,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:04,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:04,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-05-12 10:43:04,735 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:04,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:04,736 INFO L85 PathProgramCache]: Analyzing trace with hash 873982102, now seen corresponding path program 2 times [2024-05-12 10:43:04,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:04,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758036655] [2024-05-12 10:43:04,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:04,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:05,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:05,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758036655] [2024-05-12 10:43:05,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758036655] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:05,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:05,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:05,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534750702] [2024-05-12 10:43:05,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:05,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:05,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:05,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:05,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:05,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:05,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 336 transitions, 4449 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:05,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:05,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:05,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:06,070 INFO L124 PetriNetUnfolderBase]: 3785/6478 cut-off events. [2024-05-12 10:43:06,070 INFO L125 PetriNetUnfolderBase]: For 188238/188293 co-relation queries the response was YES. [2024-05-12 10:43:06,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35925 conditions, 6478 events. 3785/6478 cut-off events. For 188238/188293 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 46276 event pairs, 1240 based on Foata normal form. 19/6253 useless extension candidates. Maximal degree in co-relation 35798. Up to 5674 conditions per place. [2024-05-12 10:43:06,147 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 253 selfloop transitions, 97 changer transitions 0/364 dead transitions. [2024-05-12 10:43:06,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 364 transitions, 5441 flow [2024-05-12 10:43:06,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:43:06,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:43:06,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-05-12 10:43:06,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5664893617021277 [2024-05-12 10:43:06,148 INFO L175 Difference]: Start difference. First operand has 296 places, 336 transitions, 4449 flow. Second operand 8 states and 213 transitions. [2024-05-12 10:43:06,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 364 transitions, 5441 flow [2024-05-12 10:43:06,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 364 transitions, 5298 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-05-12 10:43:06,589 INFO L231 Difference]: Finished difference. Result has 301 places, 342 transitions, 4624 flow [2024-05-12 10:43:06,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4330, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4624, PETRI_PLACES=301, PETRI_TRANSITIONS=342} [2024-05-12 10:43:06,589 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 250 predicate places. [2024-05-12 10:43:06,589 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 342 transitions, 4624 flow [2024-05-12 10:43:06,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:06,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:06,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:06,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-05-12 10:43:06,590 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:06,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:06,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1014126036, now seen corresponding path program 3 times [2024-05-12 10:43:06,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:06,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000987553] [2024-05-12 10:43:06,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:06,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:06,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:06,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000987553] [2024-05-12 10:43:06,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000987553] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:06,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:06,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:06,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499308224] [2024-05-12 10:43:06,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:06,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:06,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:06,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:06,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:07,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:07,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 342 transitions, 4624 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:07,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:07,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:07,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:07,974 INFO L124 PetriNetUnfolderBase]: 3782/6469 cut-off events. [2024-05-12 10:43:07,974 INFO L125 PetriNetUnfolderBase]: For 190814/190872 co-relation queries the response was YES. [2024-05-12 10:43:08,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36040 conditions, 6469 events. 3782/6469 cut-off events. For 190814/190872 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 46216 event pairs, 1233 based on Foata normal form. 19/6243 useless extension candidates. Maximal degree in co-relation 35911. Up to 5671 conditions per place. [2024-05-12 10:43:08,051 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 253 selfloop transitions, 98 changer transitions 0/365 dead transitions. [2024-05-12 10:43:08,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 365 transitions, 5382 flow [2024-05-12 10:43:08,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:43:08,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:43:08,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-05-12 10:43:08,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2024-05-12 10:43:08,052 INFO L175 Difference]: Start difference. First operand has 301 places, 342 transitions, 4624 flow. Second operand 10 states and 252 transitions. [2024-05-12 10:43:08,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 365 transitions, 5382 flow [2024-05-12 10:43:08,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 365 transitions, 5234 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-05-12 10:43:08,530 INFO L231 Difference]: Finished difference. Result has 307 places, 342 transitions, 4678 flow [2024-05-12 10:43:08,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4476, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4678, PETRI_PLACES=307, PETRI_TRANSITIONS=342} [2024-05-12 10:43:08,531 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 256 predicate places. [2024-05-12 10:43:08,531 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 342 transitions, 4678 flow [2024-05-12 10:43:08,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:08,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:08,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:08,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-05-12 10:43:08,531 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:08,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:08,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2070091926, now seen corresponding path program 4 times [2024-05-12 10:43:08,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:08,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834806808] [2024-05-12 10:43:08,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:08,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:08,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:08,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834806808] [2024-05-12 10:43:08,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834806808] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:08,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:08,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:08,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329401716] [2024-05-12 10:43:08,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:08,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:08,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:08,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:08,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:08,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:08,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 342 transitions, 4678 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:08,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:08,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:08,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:10,014 INFO L124 PetriNetUnfolderBase]: 3809/6510 cut-off events. [2024-05-12 10:43:10,015 INFO L125 PetriNetUnfolderBase]: For 199954/200012 co-relation queries the response was YES. [2024-05-12 10:43:10,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36701 conditions, 6510 events. 3809/6510 cut-off events. For 199954/200012 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 46468 event pairs, 1233 based on Foata normal form. 19/6278 useless extension candidates. Maximal degree in co-relation 36570. Up to 5685 conditions per place. [2024-05-12 10:43:10,088 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 250 selfloop transitions, 108 changer transitions 0/372 dead transitions. [2024-05-12 10:43:10,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 372 transitions, 5856 flow [2024-05-12 10:43:10,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:43:10,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:43:10,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-05-12 10:43:10,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508274231678487 [2024-05-12 10:43:10,089 INFO L175 Difference]: Start difference. First operand has 307 places, 342 transitions, 4678 flow. Second operand 9 states and 233 transitions. [2024-05-12 10:43:10,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 372 transitions, 5856 flow [2024-05-12 10:43:10,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 372 transitions, 5702 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-05-12 10:43:10,655 INFO L231 Difference]: Finished difference. Result has 309 places, 351 transitions, 4927 flow [2024-05-12 10:43:10,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4524, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4927, PETRI_PLACES=309, PETRI_TRANSITIONS=351} [2024-05-12 10:43:10,656 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 258 predicate places. [2024-05-12 10:43:10,656 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 351 transitions, 4927 flow [2024-05-12 10:43:10,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:10,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:10,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:10,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-05-12 10:43:10,657 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:10,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:10,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1017878212, now seen corresponding path program 5 times [2024-05-12 10:43:10,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:10,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409706776] [2024-05-12 10:43:10,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:10,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:11,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:11,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:11,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409706776] [2024-05-12 10:43:11,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409706776] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:11,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:11,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:11,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888602576] [2024-05-12 10:43:11,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:11,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:11,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:11,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:11,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:11,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:11,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 351 transitions, 4927 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:11,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:11,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:11,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:12,102 INFO L124 PetriNetUnfolderBase]: 3816/6521 cut-off events. [2024-05-12 10:43:12,102 INFO L125 PetriNetUnfolderBase]: For 205891/205949 co-relation queries the response was YES. [2024-05-12 10:43:12,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36981 conditions, 6521 events. 3816/6521 cut-off events. For 205891/205949 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 46609 event pairs, 1233 based on Foata normal form. 19/6287 useless extension candidates. Maximal degree in co-relation 36848. Up to 5693 conditions per place. [2024-05-12 10:43:12,188 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 251 selfloop transitions, 112 changer transitions 0/377 dead transitions. [2024-05-12 10:43:12,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 377 transitions, 6027 flow [2024-05-12 10:43:12,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:43:12,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:43:12,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 275 transitions. [2024-05-12 10:43:12,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-05-12 10:43:12,189 INFO L175 Difference]: Start difference. First operand has 309 places, 351 transitions, 4927 flow. Second operand 11 states and 275 transitions. [2024-05-12 10:43:12,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 377 transitions, 6027 flow [2024-05-12 10:43:12,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 377 transitions, 5769 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-05-12 10:43:12,927 INFO L231 Difference]: Finished difference. Result has 315 places, 354 transitions, 4955 flow [2024-05-12 10:43:12,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4683, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4955, PETRI_PLACES=315, PETRI_TRANSITIONS=354} [2024-05-12 10:43:12,927 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 264 predicate places. [2024-05-12 10:43:12,927 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 354 transitions, 4955 flow [2024-05-12 10:43:12,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:12,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:12,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:12,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-05-12 10:43:12,928 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:12,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:12,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2077379786, now seen corresponding path program 6 times [2024-05-12 10:43:12,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:12,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309010717] [2024-05-12 10:43:12,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:12,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:13,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:13,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309010717] [2024-05-12 10:43:13,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309010717] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:13,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:13,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:13,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047957732] [2024-05-12 10:43:13,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:13,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:13,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:13,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:13,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:13,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:13,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 354 transitions, 4955 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:13,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:13,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:13,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:14,350 INFO L124 PetriNetUnfolderBase]: 3813/6517 cut-off events. [2024-05-12 10:43:14,351 INFO L125 PetriNetUnfolderBase]: For 208180/208238 co-relation queries the response was YES. [2024-05-12 10:43:14,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36902 conditions, 6517 events. 3813/6517 cut-off events. For 208180/208238 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 46601 event pairs, 1233 based on Foata normal form. 19/6283 useless extension candidates. Maximal degree in co-relation 36768. Up to 5690 conditions per place. [2024-05-12 10:43:14,435 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 245 selfloop transitions, 116 changer transitions 0/375 dead transitions. [2024-05-12 10:43:14,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 375 transitions, 5861 flow [2024-05-12 10:43:14,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:43:14,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:43:14,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-05-12 10:43:14,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-05-12 10:43:14,436 INFO L175 Difference]: Start difference. First operand has 315 places, 354 transitions, 4955 flow. Second operand 10 states and 250 transitions. [2024-05-12 10:43:14,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 375 transitions, 5861 flow [2024-05-12 10:43:15,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 375 transitions, 5609 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-05-12 10:43:15,204 INFO L231 Difference]: Finished difference. Result has 316 places, 354 transitions, 4941 flow [2024-05-12 10:43:15,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4703, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4941, PETRI_PLACES=316, PETRI_TRANSITIONS=354} [2024-05-12 10:43:15,205 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 265 predicate places. [2024-05-12 10:43:15,205 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 354 transitions, 4941 flow [2024-05-12 10:43:15,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:15,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:15,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:15,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-05-12 10:43:15,205 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:15,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:15,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1527062644, now seen corresponding path program 7 times [2024-05-12 10:43:15,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:15,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836220776] [2024-05-12 10:43:15,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:15,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:15,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:15,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:15,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836220776] [2024-05-12 10:43:15,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836220776] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:15,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:15,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:15,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480510028] [2024-05-12 10:43:15,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:15,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:15,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:15,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:15,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:15,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:15,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 354 transitions, 4941 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:15,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:15,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:15,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:16,724 INFO L124 PetriNetUnfolderBase]: 3830/6537 cut-off events. [2024-05-12 10:43:16,724 INFO L125 PetriNetUnfolderBase]: For 215553/215586 co-relation queries the response was YES. [2024-05-12 10:43:16,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37228 conditions, 6537 events. 3830/6537 cut-off events. For 215553/215586 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 46633 event pairs, 1236 based on Foata normal form. 1/6277 useless extension candidates. Maximal degree in co-relation 37093. Up to 5577 conditions per place. [2024-05-12 10:43:16,800 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 217 selfloop transitions, 153 changer transitions 0/384 dead transitions. [2024-05-12 10:43:16,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 384 transitions, 6263 flow [2024-05-12 10:43:16,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:43:16,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:43:16,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-05-12 10:43:16,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771276595744681 [2024-05-12 10:43:16,801 INFO L175 Difference]: Start difference. First operand has 316 places, 354 transitions, 4941 flow. Second operand 8 states and 217 transitions. [2024-05-12 10:43:16,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 384 transitions, 6263 flow [2024-05-12 10:43:17,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 384 transitions, 6040 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-05-12 10:43:17,485 INFO L231 Difference]: Finished difference. Result has 316 places, 360 transitions, 5146 flow [2024-05-12 10:43:17,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4718, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5146, PETRI_PLACES=316, PETRI_TRANSITIONS=360} [2024-05-12 10:43:17,485 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 265 predicate places. [2024-05-12 10:43:17,485 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 360 transitions, 5146 flow [2024-05-12 10:43:17,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:17,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:17,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:17,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-05-12 10:43:17,486 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:17,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:17,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1956340122, now seen corresponding path program 8 times [2024-05-12 10:43:17,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:17,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361012160] [2024-05-12 10:43:17,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:17,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:17,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:17,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361012160] [2024-05-12 10:43:17,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361012160] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:17,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:17,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:17,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587408663] [2024-05-12 10:43:17,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:17,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:17,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:17,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:17,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:17,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:17,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 360 transitions, 5146 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:17,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:17,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:17,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:18,959 INFO L124 PetriNetUnfolderBase]: 3837/6553 cut-off events. [2024-05-12 10:43:18,959 INFO L125 PetriNetUnfolderBase]: For 221668/221698 co-relation queries the response was YES. [2024-05-12 10:43:19,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37542 conditions, 6553 events. 3837/6553 cut-off events. For 221668/221698 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 46811 event pairs, 1243 based on Foata normal form. 1/6292 useless extension candidates. Maximal degree in co-relation 37406. Up to 5585 conditions per place. [2024-05-12 10:43:19,046 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 206 selfloop transitions, 166 changer transitions 0/386 dead transitions. [2024-05-12 10:43:19,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 386 transitions, 6286 flow [2024-05-12 10:43:19,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:43:19,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:43:19,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-05-12 10:43:19,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5718085106382979 [2024-05-12 10:43:19,047 INFO L175 Difference]: Start difference. First operand has 316 places, 360 transitions, 5146 flow. Second operand 8 states and 215 transitions. [2024-05-12 10:43:19,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 386 transitions, 6286 flow [2024-05-12 10:43:19,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 386 transitions, 5934 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-05-12 10:43:19,749 INFO L231 Difference]: Finished difference. Result has 320 places, 363 transitions, 5196 flow [2024-05-12 10:43:19,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4808, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5196, PETRI_PLACES=320, PETRI_TRANSITIONS=363} [2024-05-12 10:43:19,750 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 269 predicate places. [2024-05-12 10:43:19,750 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 363 transitions, 5196 flow [2024-05-12 10:43:19,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:19,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:19,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:19,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-05-12 10:43:19,750 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:19,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:19,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1696489322, now seen corresponding path program 9 times [2024-05-12 10:43:19,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:19,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907892713] [2024-05-12 10:43:19,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:19,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:20,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:20,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:20,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907892713] [2024-05-12 10:43:20,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907892713] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:20,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:20,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:20,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501737747] [2024-05-12 10:43:20,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:20,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:20,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:20,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:20,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:20,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:20,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 363 transitions, 5196 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:20,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:20,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:20,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:21,211 INFO L124 PetriNetUnfolderBase]: 3844/6559 cut-off events. [2024-05-12 10:43:21,211 INFO L125 PetriNetUnfolderBase]: For 226525/226558 co-relation queries the response was YES. [2024-05-12 10:43:21,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37648 conditions, 6559 events. 3844/6559 cut-off events. For 226525/226558 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 46860 event pairs, 1236 based on Foata normal form. 1/6295 useless extension candidates. Maximal degree in co-relation 37510. Up to 5750 conditions per place. [2024-05-12 10:43:21,298 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 274 selfloop transitions, 97 changer transitions 0/385 dead transitions. [2024-05-12 10:43:21,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 385 transitions, 6174 flow [2024-05-12 10:43:21,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:43:21,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:43:21,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-05-12 10:43:21,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2024-05-12 10:43:21,299 INFO L175 Difference]: Start difference. First operand has 320 places, 363 transitions, 5196 flow. Second operand 8 states and 210 transitions. [2024-05-12 10:43:21,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 385 transitions, 6174 flow [2024-05-12 10:43:22,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 385 transitions, 5768 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-05-12 10:43:22,008 INFO L231 Difference]: Finished difference. Result has 322 places, 366 transitions, 5040 flow [2024-05-12 10:43:22,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4796, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5040, PETRI_PLACES=322, PETRI_TRANSITIONS=366} [2024-05-12 10:43:22,009 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 271 predicate places. [2024-05-12 10:43:22,009 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 366 transitions, 5040 flow [2024-05-12 10:43:22,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:22,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:22,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:22,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-05-12 10:43:22,010 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:22,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:22,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1481101376, now seen corresponding path program 10 times [2024-05-12 10:43:22,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:22,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840094598] [2024-05-12 10:43:22,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:22,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:22,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:22,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:22,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840094598] [2024-05-12 10:43:22,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840094598] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:22,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:22,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:22,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651349948] [2024-05-12 10:43:22,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:22,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:22,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:22,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:22,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:22,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:22,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 366 transitions, 5040 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:22,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:22,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:22,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:23,530 INFO L124 PetriNetUnfolderBase]: 3851/6571 cut-off events. [2024-05-12 10:43:23,530 INFO L125 PetriNetUnfolderBase]: For 229773/229806 co-relation queries the response was YES. [2024-05-12 10:43:23,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37519 conditions, 6571 events. 3851/6571 cut-off events. For 229773/229806 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 46852 event pairs, 1224 based on Foata normal form. 1/6308 useless extension candidates. Maximal degree in co-relation 37380. Up to 5835 conditions per place. [2024-05-12 10:43:23,611 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 328 selfloop transitions, 45 changer transitions 0/387 dead transitions. [2024-05-12 10:43:23,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 387 transitions, 5874 flow [2024-05-12 10:43:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:43:23,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:43:23,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-05-12 10:43:23,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452127659574468 [2024-05-12 10:43:23,612 INFO L175 Difference]: Start difference. First operand has 322 places, 366 transitions, 5040 flow. Second operand 8 states and 205 transitions. [2024-05-12 10:43:23,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 387 transitions, 5874 flow [2024-05-12 10:43:24,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 387 transitions, 5688 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-05-12 10:43:24,418 INFO L231 Difference]: Finished difference. Result has 325 places, 369 transitions, 5000 flow [2024-05-12 10:43:24,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4854, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5000, PETRI_PLACES=325, PETRI_TRANSITIONS=369} [2024-05-12 10:43:24,419 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 274 predicate places. [2024-05-12 10:43:24,419 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 369 transitions, 5000 flow [2024-05-12 10:43:24,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:24,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:24,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:24,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-05-12 10:43:24,419 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:24,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:24,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1619806810, now seen corresponding path program 11 times [2024-05-12 10:43:24,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:24,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954819997] [2024-05-12 10:43:24,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:24,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:24,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:24,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:24,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954819997] [2024-05-12 10:43:24,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954819997] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:24,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:24,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:24,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065385303] [2024-05-12 10:43:24,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:24,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:24,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:24,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:24,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:24,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:24,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 369 transitions, 5000 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:24,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:24,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:24,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:25,941 INFO L124 PetriNetUnfolderBase]: 3848/6566 cut-off events. [2024-05-12 10:43:25,942 INFO L125 PetriNetUnfolderBase]: For 232476/232509 co-relation queries the response was YES. [2024-05-12 10:43:26,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37387 conditions, 6566 events. 3848/6566 cut-off events. For 232476/232509 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 46873 event pairs, 1236 based on Foata normal form. 1/6300 useless extension candidates. Maximal degree in co-relation 37247. Up to 5756 conditions per place. [2024-05-12 10:43:26,039 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 277 selfloop transitions, 98 changer transitions 0/389 dead transitions. [2024-05-12 10:43:26,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 389 transitions, 5798 flow [2024-05-12 10:43:26,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:43:26,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:43:26,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-05-12 10:43:26,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297872340425532 [2024-05-12 10:43:26,040 INFO L175 Difference]: Start difference. First operand has 325 places, 369 transitions, 5000 flow. Second operand 10 states and 249 transitions. [2024-05-12 10:43:26,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 389 transitions, 5798 flow [2024-05-12 10:43:26,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 389 transitions, 5546 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-05-12 10:43:26,951 INFO L231 Difference]: Finished difference. Result has 326 places, 369 transitions, 4950 flow [2024-05-12 10:43:26,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4748, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4950, PETRI_PLACES=326, PETRI_TRANSITIONS=369} [2024-05-12 10:43:26,952 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 275 predicate places. [2024-05-12 10:43:26,952 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 369 transitions, 4950 flow [2024-05-12 10:43:26,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:26,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:26,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:26,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-05-12 10:43:26,952 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:26,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:26,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1495134474, now seen corresponding path program 12 times [2024-05-12 10:43:26,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:26,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274360690] [2024-05-12 10:43:26,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:26,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:27,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:27,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274360690] [2024-05-12 10:43:27,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274360690] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:27,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:27,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:27,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250742824] [2024-05-12 10:43:27,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:27,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:27,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:27,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:27,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:27,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:27,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 369 transitions, 4950 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:27,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:27,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:27,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:28,398 INFO L124 PetriNetUnfolderBase]: 3855/6582 cut-off events. [2024-05-12 10:43:28,398 INFO L125 PetriNetUnfolderBase]: For 237297/237327 co-relation queries the response was YES. [2024-05-12 10:43:28,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37570 conditions, 6582 events. 3855/6582 cut-off events. For 237297/237327 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 47041 event pairs, 1243 based on Foata normal form. 1/6315 useless extension candidates. Maximal degree in co-relation 37430. Up to 5606 conditions per place. [2024-05-12 10:43:28,494 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 204 selfloop transitions, 173 changer transitions 0/391 dead transitions. [2024-05-12 10:43:28,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 391 transitions, 5946 flow [2024-05-12 10:43:28,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:43:28,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:43:28,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-05-12 10:43:28,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-05-12 10:43:28,495 INFO L175 Difference]: Start difference. First operand has 326 places, 369 transitions, 4950 flow. Second operand 8 states and 212 transitions. [2024-05-12 10:43:28,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 391 transitions, 5946 flow [2024-05-12 10:43:29,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 391 transitions, 5722 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-05-12 10:43:29,267 INFO L231 Difference]: Finished difference. Result has 324 places, 372 transitions, 5128 flow [2024-05-12 10:43:29,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4726, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5128, PETRI_PLACES=324, PETRI_TRANSITIONS=372} [2024-05-12 10:43:29,268 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 273 predicate places. [2024-05-12 10:43:29,268 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 372 transitions, 5128 flow [2024-05-12 10:43:29,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:29,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:29,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:29,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-05-12 10:43:29,268 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:29,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:29,269 INFO L85 PathProgramCache]: Analyzing trace with hash 2070623166, now seen corresponding path program 13 times [2024-05-12 10:43:29,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:29,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93213279] [2024-05-12 10:43:29,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:29,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:29,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:29,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:29,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93213279] [2024-05-12 10:43:29,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93213279] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:29,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:29,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:29,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433119842] [2024-05-12 10:43:29,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:29,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:29,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:29,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:29,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:29,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:29,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 372 transitions, 5128 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:29,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:29,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:29,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:30,779 INFO L124 PetriNetUnfolderBase]: 3902/6653 cut-off events. [2024-05-12 10:43:30,779 INFO L125 PetriNetUnfolderBase]: For 255402/255432 co-relation queries the response was YES. [2024-05-12 10:43:30,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38727 conditions, 6653 events. 3902/6653 cut-off events. For 255402/255432 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 47511 event pairs, 1243 based on Foata normal form. 1/6376 useless extension candidates. Maximal degree in co-relation 38586. Up to 5784 conditions per place. [2024-05-12 10:43:30,870 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 264 selfloop transitions, 129 changer transitions 0/407 dead transitions. [2024-05-12 10:43:30,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 407 transitions, 6536 flow [2024-05-12 10:43:30,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:43:30,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:43:30,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 273 transitions. [2024-05-12 10:43:30,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528046421663443 [2024-05-12 10:43:30,871 INFO L175 Difference]: Start difference. First operand has 324 places, 372 transitions, 5128 flow. Second operand 11 states and 273 transitions. [2024-05-12 10:43:30,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 407 transitions, 6536 flow [2024-05-12 10:43:31,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 407 transitions, 6238 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-05-12 10:43:31,723 INFO L231 Difference]: Finished difference. Result has 330 places, 387 transitions, 5386 flow [2024-05-12 10:43:31,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4845, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5386, PETRI_PLACES=330, PETRI_TRANSITIONS=387} [2024-05-12 10:43:31,723 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 279 predicate places. [2024-05-12 10:43:31,723 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 387 transitions, 5386 flow [2024-05-12 10:43:31,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:31,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:31,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:31,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-05-12 10:43:31,723 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:31,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:31,724 INFO L85 PathProgramCache]: Analyzing trace with hash 2079337266, now seen corresponding path program 14 times [2024-05-12 10:43:31,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:31,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660522672] [2024-05-12 10:43:31,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:31,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:32,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:32,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:32,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660522672] [2024-05-12 10:43:32,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660522672] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:32,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:32,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:32,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381703040] [2024-05-12 10:43:32,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:32,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:32,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:32,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:32,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:32,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:32,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 387 transitions, 5386 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:32,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:32,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:32,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:33,355 INFO L124 PetriNetUnfolderBase]: 3916/6676 cut-off events. [2024-05-12 10:43:33,355 INFO L125 PetriNetUnfolderBase]: For 261138/261168 co-relation queries the response was YES. [2024-05-12 10:43:33,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38847 conditions, 6676 events. 3916/6676 cut-off events. For 261138/261168 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 47710 event pairs, 1231 based on Foata normal form. 1/6398 useless extension candidates. Maximal degree in co-relation 38705. Up to 5943 conditions per place. [2024-05-12 10:43:33,438 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 358 selfloop transitions, 36 changer transitions 0/408 dead transitions. [2024-05-12 10:43:33,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 408 transitions, 6322 flow [2024-05-12 10:43:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:43:33,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:43:33,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-05-12 10:43:33,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-05-12 10:43:33,439 INFO L175 Difference]: Start difference. First operand has 330 places, 387 transitions, 5386 flow. Second operand 8 states and 202 transitions. [2024-05-12 10:43:33,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 408 transitions, 6322 flow [2024-05-12 10:43:34,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 408 transitions, 6074 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-05-12 10:43:34,348 INFO L231 Difference]: Finished difference. Result has 331 places, 393 transitions, 5334 flow [2024-05-12 10:43:34,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5149, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5334, PETRI_PLACES=331, PETRI_TRANSITIONS=393} [2024-05-12 10:43:34,348 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 280 predicate places. [2024-05-12 10:43:34,349 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 393 transitions, 5334 flow [2024-05-12 10:43:34,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:34,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:34,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:34,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-05-12 10:43:34,349 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:34,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:34,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1352403272, now seen corresponding path program 15 times [2024-05-12 10:43:34,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:34,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157452864] [2024-05-12 10:43:34,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:34,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:34,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:34,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:34,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157452864] [2024-05-12 10:43:34,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157452864] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:34,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:34,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:34,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109051452] [2024-05-12 10:43:34,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:34,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:34,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:34,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:34,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:34,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:34,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 393 transitions, 5334 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:34,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:34,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:34,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:35,854 INFO L124 PetriNetUnfolderBase]: 3913/6671 cut-off events. [2024-05-12 10:43:35,854 INFO L125 PetriNetUnfolderBase]: For 262780/262810 co-relation queries the response was YES. [2024-05-12 10:43:35,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38698 conditions, 6671 events. 3913/6671 cut-off events. For 262780/262810 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 47725 event pairs, 1243 based on Foata normal form. 1/6390 useless extension candidates. Maximal degree in co-relation 38555. Up to 5795 conditions per place. [2024-05-12 10:43:35,944 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 265 selfloop transitions, 133 changer transitions 0/412 dead transitions. [2024-05-12 10:43:35,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 412 transitions, 6478 flow [2024-05-12 10:43:35,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:43:35,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:43:35,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-05-12 10:43:35,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382978723404256 [2024-05-12 10:43:35,945 INFO L175 Difference]: Start difference. First operand has 331 places, 393 transitions, 5334 flow. Second operand 10 states and 253 transitions. [2024-05-12 10:43:35,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 412 transitions, 6478 flow [2024-05-12 10:43:37,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 412 transitions, 6386 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-05-12 10:43:37,010 INFO L231 Difference]: Finished difference. Result has 336 places, 393 transitions, 5514 flow [2024-05-12 10:43:37,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5242, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5514, PETRI_PLACES=336, PETRI_TRANSITIONS=393} [2024-05-12 10:43:37,011 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 285 predicate places. [2024-05-12 10:43:37,011 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 393 transitions, 5514 flow [2024-05-12 10:43:37,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:37,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:37,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:37,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-05-12 10:43:37,011 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:37,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:37,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2084699646, now seen corresponding path program 16 times [2024-05-12 10:43:37,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:37,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765564389] [2024-05-12 10:43:37,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:37,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:37,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:37,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765564389] [2024-05-12 10:43:37,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765564389] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:37,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:37,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:37,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608153288] [2024-05-12 10:43:37,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:37,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:37,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:37,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:37,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:37,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:37,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 393 transitions, 5514 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:37,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:37,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:37,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:38,710 INFO L124 PetriNetUnfolderBase]: 3910/6668 cut-off events. [2024-05-12 10:43:38,710 INFO L125 PetriNetUnfolderBase]: For 266009/266039 co-relation queries the response was YES. [2024-05-12 10:43:38,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38891 conditions, 6668 events. 3910/6668 cut-off events. For 266009/266039 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 47593 event pairs, 1231 based on Foata normal form. 1/6390 useless extension candidates. Maximal degree in co-relation 38747. Up to 5925 conditions per place. [2024-05-12 10:43:38,802 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 353 selfloop transitions, 46 changer transitions 0/413 dead transitions. [2024-05-12 10:43:38,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 413 transitions, 6512 flow [2024-05-12 10:43:38,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 10:43:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 10:43:38,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 286 transitions. [2024-05-12 10:43:38,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-05-12 10:43:38,803 INFO L175 Difference]: Start difference. First operand has 336 places, 393 transitions, 5514 flow. Second operand 12 states and 286 transitions. [2024-05-12 10:43:38,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 413 transitions, 6512 flow [2024-05-12 10:43:39,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 413 transitions, 6264 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-05-12 10:43:39,901 INFO L231 Difference]: Finished difference. Result has 342 places, 393 transitions, 5364 flow [2024-05-12 10:43:39,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5266, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5364, PETRI_PLACES=342, PETRI_TRANSITIONS=393} [2024-05-12 10:43:39,902 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 291 predicate places. [2024-05-12 10:43:39,902 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 393 transitions, 5364 flow [2024-05-12 10:43:39,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:39,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:39,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:39,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-05-12 10:43:39,902 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:39,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:39,902 INFO L85 PathProgramCache]: Analyzing trace with hash 2084432736, now seen corresponding path program 17 times [2024-05-12 10:43:39,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:39,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077692779] [2024-05-12 10:43:39,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:39,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:40,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:40,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:40,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077692779] [2024-05-12 10:43:40,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077692779] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:40,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:40,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:40,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522230075] [2024-05-12 10:43:40,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:40,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:40,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:40,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:40,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:40,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:40,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 393 transitions, 5364 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:40,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:40,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:40,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:41,527 INFO L124 PetriNetUnfolderBase]: 3907/6664 cut-off events. [2024-05-12 10:43:41,527 INFO L125 PetriNetUnfolderBase]: For 267807/267837 co-relation queries the response was YES. [2024-05-12 10:43:41,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38644 conditions, 6664 events. 3907/6664 cut-off events. For 267807/267837 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 47718 event pairs, 1231 based on Foata normal form. 1/6386 useless extension candidates. Maximal degree in co-relation 38499. Up to 5922 conditions per place. [2024-05-12 10:43:41,612 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 350 selfloop transitions, 46 changer transitions 0/410 dead transitions. [2024-05-12 10:43:41,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 410 transitions, 6196 flow [2024-05-12 10:43:41,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:43:41,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:43:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2024-05-12 10:43:41,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170212765957447 [2024-05-12 10:43:41,615 INFO L175 Difference]: Start difference. First operand has 342 places, 393 transitions, 5364 flow. Second operand 10 states and 243 transitions. [2024-05-12 10:43:41,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 410 transitions, 6196 flow [2024-05-12 10:43:42,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 410 transitions, 6020 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-05-12 10:43:42,763 INFO L231 Difference]: Finished difference. Result has 341 places, 393 transitions, 5286 flow [2024-05-12 10:43:42,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5188, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5286, PETRI_PLACES=341, PETRI_TRANSITIONS=393} [2024-05-12 10:43:42,763 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 290 predicate places. [2024-05-12 10:43:42,763 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 393 transitions, 5286 flow [2024-05-12 10:43:42,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:42,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:42,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:42,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-05-12 10:43:42,764 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:42,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:42,764 INFO L85 PathProgramCache]: Analyzing trace with hash 2078891796, now seen corresponding path program 18 times [2024-05-12 10:43:42,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:42,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806105480] [2024-05-12 10:43:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:42,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:43,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:43,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:43,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806105480] [2024-05-12 10:43:43,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806105480] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:43,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:43,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:43,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071943431] [2024-05-12 10:43:43,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:43,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:43,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:43,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:43,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:43,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:43,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 393 transitions, 5286 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:43,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:43,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:43,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:44,250 INFO L124 PetriNetUnfolderBase]: 3904/6659 cut-off events. [2024-05-12 10:43:44,251 INFO L125 PetriNetUnfolderBase]: For 270380/270410 co-relation queries the response was YES. [2024-05-12 10:43:44,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38540 conditions, 6659 events. 3904/6659 cut-off events. For 270380/270410 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 47571 event pairs, 1243 based on Foata normal form. 1/6378 useless extension candidates. Maximal degree in co-relation 38394. Up to 5786 conditions per place. [2024-05-12 10:43:44,342 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 263 selfloop transitions, 131 changer transitions 0/408 dead transitions. [2024-05-12 10:43:44,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 408 transitions, 6110 flow [2024-05-12 10:43:44,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:43:44,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:43:44,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-05-12 10:43:44,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.550531914893617 [2024-05-12 10:43:44,343 INFO L175 Difference]: Start difference. First operand has 341 places, 393 transitions, 5286 flow. Second operand 8 states and 207 transitions. [2024-05-12 10:43:44,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 408 transitions, 6110 flow [2024-05-12 10:43:45,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 408 transitions, 6000 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-05-12 10:43:45,398 INFO L231 Difference]: Finished difference. Result has 340 places, 393 transitions, 5444 flow [2024-05-12 10:43:45,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5176, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5444, PETRI_PLACES=340, PETRI_TRANSITIONS=393} [2024-05-12 10:43:45,398 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 289 predicate places. [2024-05-12 10:43:45,399 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 393 transitions, 5444 flow [2024-05-12 10:43:45,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:45,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:45,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:45,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-05-12 10:43:45,399 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:45,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:45,399 INFO L85 PathProgramCache]: Analyzing trace with hash -318443192, now seen corresponding path program 19 times [2024-05-12 10:43:45,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:45,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53976528] [2024-05-12 10:43:45,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:45,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:45,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:45,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53976528] [2024-05-12 10:43:45,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53976528] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:45,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:45,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:45,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606773509] [2024-05-12 10:43:45,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:45,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:45,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:45,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:45,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:45,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:45,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 393 transitions, 5444 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:45,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:45,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:45,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:46,996 INFO L124 PetriNetUnfolderBase]: 3931/6701 cut-off events. [2024-05-12 10:43:46,997 INFO L125 PetriNetUnfolderBase]: For 283739/283769 co-relation queries the response was YES. [2024-05-12 10:43:47,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39278 conditions, 6701 events. 3931/6701 cut-off events. For 283739/283769 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 47859 event pairs, 1231 based on Foata normal form. 1/6417 useless extension candidates. Maximal degree in co-relation 39131. Up to 5822 conditions per place. [2024-05-12 10:43:47,092 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 310 selfloop transitions, 114 changer transitions 0/438 dead transitions. [2024-05-12 10:43:47,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 438 transitions, 6867 flow [2024-05-12 10:43:47,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:43:47,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:43:47,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 253 transitions. [2024-05-12 10:43:47,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5981087470449172 [2024-05-12 10:43:47,093 INFO L175 Difference]: Start difference. First operand has 340 places, 393 transitions, 5444 flow. Second operand 9 states and 253 transitions. [2024-05-12 10:43:47,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 438 transitions, 6867 flow [2024-05-12 10:43:48,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 438 transitions, 6587 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-05-12 10:43:48,207 INFO L231 Difference]: Finished difference. Result has 343 places, 402 transitions, 5664 flow [2024-05-12 10:43:48,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5164, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5664, PETRI_PLACES=343, PETRI_TRANSITIONS=402} [2024-05-12 10:43:48,207 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 292 predicate places. [2024-05-12 10:43:48,208 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 402 transitions, 5664 flow [2024-05-12 10:43:48,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:48,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:48,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:48,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-05-12 10:43:48,208 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:48,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:48,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1192740600, now seen corresponding path program 20 times [2024-05-12 10:43:48,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:48,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825015161] [2024-05-12 10:43:48,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:48,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:48,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:48,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:48,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825015161] [2024-05-12 10:43:48,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825015161] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:48,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:48,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:48,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599378107] [2024-05-12 10:43:48,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:48,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:48,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:48,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:48,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:48,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:48,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 402 transitions, 5664 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:48,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:48,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:48,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:49,948 INFO L124 PetriNetUnfolderBase]: 3938/6711 cut-off events. [2024-05-12 10:43:49,948 INFO L125 PetriNetUnfolderBase]: For 290540/290570 co-relation queries the response was YES. [2024-05-12 10:43:50,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39649 conditions, 6711 events. 3938/6711 cut-off events. For 290540/290570 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 47947 event pairs, 1243 based on Foata normal form. 1/6422 useless extension candidates. Maximal degree in co-relation 39499. Up to 5731 conditions per place. [2024-05-12 10:43:50,027 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 231 selfloop transitions, 191 changer transitions 0/436 dead transitions. [2024-05-12 10:43:50,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 436 transitions, 7129 flow [2024-05-12 10:43:50,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:43:50,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:43:50,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-05-12 10:43:50,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5839243498817966 [2024-05-12 10:43:50,028 INFO L175 Difference]: Start difference. First operand has 343 places, 402 transitions, 5664 flow. Second operand 9 states and 247 transitions. [2024-05-12 10:43:50,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 436 transitions, 7129 flow [2024-05-12 10:43:51,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 436 transitions, 6942 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-05-12 10:43:51,089 INFO L231 Difference]: Finished difference. Result has 344 places, 405 transitions, 5938 flow [2024-05-12 10:43:51,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5483, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5938, PETRI_PLACES=344, PETRI_TRANSITIONS=405} [2024-05-12 10:43:51,090 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 293 predicate places. [2024-05-12 10:43:51,090 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 405 transitions, 5938 flow [2024-05-12 10:43:51,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:51,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:51,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:51,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-05-12 10:43:51,090 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:51,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:51,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1201460280, now seen corresponding path program 21 times [2024-05-12 10:43:51,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:51,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386717348] [2024-05-12 10:43:51,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:51,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:51,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:51,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386717348] [2024-05-12 10:43:51,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386717348] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:51,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:51,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:51,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885457590] [2024-05-12 10:43:51,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:51,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:51,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:51,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:51,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:51,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:51,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 405 transitions, 5938 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:51,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:51,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:51,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:52,680 INFO L124 PetriNetUnfolderBase]: 3952/6734 cut-off events. [2024-05-12 10:43:52,680 INFO L125 PetriNetUnfolderBase]: For 291892/291922 co-relation queries the response was YES. [2024-05-12 10:43:52,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40074 conditions, 6734 events. 3952/6734 cut-off events. For 291892/291922 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 47988 event pairs, 1231 based on Foata normal form. 1/6444 useless extension candidates. Maximal degree in co-relation 39926. Up to 5966 conditions per place. [2024-05-12 10:43:52,777 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 364 selfloop transitions, 50 changer transitions 0/428 dead transitions. [2024-05-12 10:43:52,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 428 transitions, 6938 flow [2024-05-12 10:43:52,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:43:52,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:43:52,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-05-12 10:43:52,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5592705167173252 [2024-05-12 10:43:52,778 INFO L175 Difference]: Start difference. First operand has 344 places, 405 transitions, 5938 flow. Second operand 7 states and 184 transitions. [2024-05-12 10:43:52,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 428 transitions, 6938 flow [2024-05-12 10:43:53,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 428 transitions, 6372 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-05-12 10:43:53,842 INFO L231 Difference]: Finished difference. Result has 341 places, 411 transitions, 5618 flow [2024-05-12 10:43:53,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5389, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5618, PETRI_PLACES=341, PETRI_TRANSITIONS=411} [2024-05-12 10:43:53,842 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 290 predicate places. [2024-05-12 10:43:53,842 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 411 transitions, 5618 flow [2024-05-12 10:43:53,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:53,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:53,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:53,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-05-12 10:43:53,842 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:53,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:53,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1201014810, now seen corresponding path program 22 times [2024-05-12 10:43:53,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:53,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601971003] [2024-05-12 10:43:53,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:53,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:54,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:54,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601971003] [2024-05-12 10:43:54,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601971003] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:54,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:54,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:54,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129425176] [2024-05-12 10:43:54,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:54,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:54,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:54,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:54,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:54,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:54,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 411 transitions, 5618 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:54,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:54,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:54,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:55,373 INFO L124 PetriNetUnfolderBase]: 3949/6729 cut-off events. [2024-05-12 10:43:55,373 INFO L125 PetriNetUnfolderBase]: For 280226/280256 co-relation queries the response was YES. [2024-05-12 10:43:55,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39391 conditions, 6729 events. 3949/6729 cut-off events. For 280226/280256 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 48145 event pairs, 1243 based on Foata normal form. 1/6436 useless extension candidates. Maximal degree in co-relation 39244. Up to 5742 conditions per place. [2024-05-12 10:43:55,465 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 229 selfloop transitions, 190 changer transitions 0/433 dead transitions. [2024-05-12 10:43:55,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 433 transitions, 6830 flow [2024-05-12 10:43:55,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:43:55,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:43:55,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-05-12 10:43:55,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5896656534954408 [2024-05-12 10:43:55,466 INFO L175 Difference]: Start difference. First operand has 341 places, 411 transitions, 5618 flow. Second operand 7 states and 194 transitions. [2024-05-12 10:43:55,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 433 transitions, 6830 flow [2024-05-12 10:43:56,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 433 transitions, 6690 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-05-12 10:43:56,463 INFO L231 Difference]: Finished difference. Result has 343 places, 411 transitions, 5872 flow [2024-05-12 10:43:56,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5482, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5872, PETRI_PLACES=343, PETRI_TRANSITIONS=411} [2024-05-12 10:43:56,463 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 292 predicate places. [2024-05-12 10:43:56,463 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 411 transitions, 5872 flow [2024-05-12 10:43:56,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:56,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:56,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:56,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-05-12 10:43:56,464 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:56,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:56,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1192746180, now seen corresponding path program 23 times [2024-05-12 10:43:56,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:56,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465997468] [2024-05-12 10:43:56,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:56,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:56,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:56,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465997468] [2024-05-12 10:43:56,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465997468] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:56,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:56,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:56,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645237086] [2024-05-12 10:43:56,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:56,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:56,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:56,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:56,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:56,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:56,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 411 transitions, 5872 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:56,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:56,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:56,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:58,038 INFO L124 PetriNetUnfolderBase]: 3946/6725 cut-off events. [2024-05-12 10:43:58,038 INFO L125 PetriNetUnfolderBase]: For 278293/278323 co-relation queries the response was YES. [2024-05-12 10:43:58,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39622 conditions, 6725 events. 3946/6725 cut-off events. For 278293/278323 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 48084 event pairs, 1243 based on Foata normal form. 1/6432 useless extension candidates. Maximal degree in co-relation 39475. Up to 5739 conditions per place. [2024-05-12 10:43:58,132 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 223 selfloop transitions, 202 changer transitions 0/439 dead transitions. [2024-05-12 10:43:58,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 439 transitions, 7110 flow [2024-05-12 10:43:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:43:58,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:43:58,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-05-12 10:43:58,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2024-05-12 10:43:58,133 INFO L175 Difference]: Start difference. First operand has 343 places, 411 transitions, 5872 flow. Second operand 10 states and 262 transitions. [2024-05-12 10:43:58,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 439 transitions, 7110 flow [2024-05-12 10:43:59,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 439 transitions, 6624 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-05-12 10:43:59,313 INFO L231 Difference]: Finished difference. Result has 346 places, 411 transitions, 5808 flow [2024-05-12 10:43:59,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5390, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5808, PETRI_PLACES=346, PETRI_TRANSITIONS=411} [2024-05-12 10:43:59,313 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 295 predicate places. [2024-05-12 10:43:59,313 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 411 transitions, 5808 flow [2024-05-12 10:43:59,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:59,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:59,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:59,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-05-12 10:43:59,314 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:59,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:59,314 INFO L85 PathProgramCache]: Analyzing trace with hash 158382890, now seen corresponding path program 24 times [2024-05-12 10:43:59,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:59,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720679077] [2024-05-12 10:43:59,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:59,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:59,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:59,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:59,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720679077] [2024-05-12 10:43:59,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720679077] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:59,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:59,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:59,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124819436] [2024-05-12 10:43:59,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:59,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:59,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:59,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:59,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:59,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:43:59,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 411 transitions, 5808 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:59,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:59,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:43:59,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:00,901 INFO L124 PetriNetUnfolderBase]: 3967/6759 cut-off events. [2024-05-12 10:44:00,902 INFO L125 PetriNetUnfolderBase]: For 277640/277670 co-relation queries the response was YES. [2024-05-12 10:44:00,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39777 conditions, 6759 events. 3967/6759 cut-off events. For 277640/277670 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 48347 event pairs, 1231 based on Foata normal form. 1/6463 useless extension candidates. Maximal degree in co-relation 39631. Up to 5966 conditions per place. [2024-05-12 10:44:00,995 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 354 selfloop transitions, 73 changer transitions 0/441 dead transitions. [2024-05-12 10:44:00,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 441 transitions, 6889 flow [2024-05-12 10:44:00,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:44:00,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:44:00,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-05-12 10:44:00,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5203094777562862 [2024-05-12 10:44:00,996 INFO L175 Difference]: Start difference. First operand has 346 places, 411 transitions, 5808 flow. Second operand 11 states and 269 transitions. [2024-05-12 10:44:00,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 441 transitions, 6889 flow [2024-05-12 10:44:01,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 441 transitions, 6409 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-05-12 10:44:01,994 INFO L231 Difference]: Finished difference. Result has 347 places, 420 transitions, 5681 flow [2024-05-12 10:44:01,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5349, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5681, PETRI_PLACES=347, PETRI_TRANSITIONS=420} [2024-05-12 10:44:01,995 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 296 predicate places. [2024-05-12 10:44:01,995 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 420 transitions, 5681 flow [2024-05-12 10:44:01,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:01,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:01,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:01,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-05-12 10:44:01,995 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:01,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:01,996 INFO L85 PathProgramCache]: Analyzing trace with hash -318176282, now seen corresponding path program 25 times [2024-05-12 10:44:01,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:01,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134652346] [2024-05-12 10:44:01,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:01,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:02,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:02,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134652346] [2024-05-12 10:44:02,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134652346] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:02,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:02,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:02,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341018253] [2024-05-12 10:44:02,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:02,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:02,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:02,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:02,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:02,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:02,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 420 transitions, 5681 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:02,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:02,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:02,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:03,589 INFO L124 PetriNetUnfolderBase]: 3964/6755 cut-off events. [2024-05-12 10:44:03,590 INFO L125 PetriNetUnfolderBase]: For 267378/267408 co-relation queries the response was YES. [2024-05-12 10:44:03,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39206 conditions, 6755 events. 3964/6755 cut-off events. For 267378/267408 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 48367 event pairs, 1231 based on Foata normal form. 1/6459 useless extension candidates. Maximal degree in co-relation 39060. Up to 5856 conditions per place. [2024-05-12 10:44:03,679 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 309 selfloop transitions, 132 changer transitions 0/455 dead transitions. [2024-05-12 10:44:03,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 455 transitions, 6809 flow [2024-05-12 10:44:03,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:44:03,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:44:03,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 250 transitions. [2024-05-12 10:44:03,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5910165484633569 [2024-05-12 10:44:03,680 INFO L175 Difference]: Start difference. First operand has 347 places, 420 transitions, 5681 flow. Second operand 9 states and 250 transitions. [2024-05-12 10:44:03,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 455 transitions, 6809 flow [2024-05-12 10:44:04,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 455 transitions, 6593 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-05-12 10:44:04,702 INFO L231 Difference]: Finished difference. Result has 348 places, 420 transitions, 5765 flow [2024-05-12 10:44:04,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5467, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5765, PETRI_PLACES=348, PETRI_TRANSITIONS=420} [2024-05-12 10:44:04,702 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 297 predicate places. [2024-05-12 10:44:04,702 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 420 transitions, 5765 flow [2024-05-12 10:44:04,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:04,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:04,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:04,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-05-12 10:44:04,703 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:04,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:04,703 INFO L85 PathProgramCache]: Analyzing trace with hash -992284848, now seen corresponding path program 26 times [2024-05-12 10:44:04,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:04,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615104326] [2024-05-12 10:44:04,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:04,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:05,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:05,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615104326] [2024-05-12 10:44:05,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615104326] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:05,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:05,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:05,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989134359] [2024-05-12 10:44:05,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:05,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:05,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:05,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:05,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:05,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:05,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 420 transitions, 5765 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:05,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:05,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:05,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:06,280 INFO L124 PetriNetUnfolderBase]: 3971/6771 cut-off events. [2024-05-12 10:44:06,280 INFO L125 PetriNetUnfolderBase]: For 268465/268511 co-relation queries the response was YES. [2024-05-12 10:44:06,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39442 conditions, 6771 events. 3971/6771 cut-off events. For 268465/268511 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 48459 event pairs, 1240 based on Foata normal form. 13/6486 useless extension candidates. Maximal degree in co-relation 39296. Up to 5766 conditions per place. [2024-05-12 10:44:06,379 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 232 selfloop transitions, 209 changer transitions 0/455 dead transitions. [2024-05-12 10:44:06,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 455 transitions, 6941 flow [2024-05-12 10:44:06,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:44:06,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:44:06,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-05-12 10:44:06,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5839243498817966 [2024-05-12 10:44:06,380 INFO L175 Difference]: Start difference. First operand has 348 places, 420 transitions, 5765 flow. Second operand 9 states and 247 transitions. [2024-05-12 10:44:06,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 455 transitions, 6941 flow [2024-05-12 10:44:07,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 455 transitions, 6731 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-05-12 10:44:07,297 INFO L231 Difference]: Finished difference. Result has 351 places, 423 transitions, 6049 flow [2024-05-12 10:44:07,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5561, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6049, PETRI_PLACES=351, PETRI_TRANSITIONS=423} [2024-05-12 10:44:07,298 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 300 predicate places. [2024-05-12 10:44:07,298 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 423 transitions, 6049 flow [2024-05-12 10:44:07,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:07,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:07,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:07,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-05-12 10:44:07,298 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:07,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:07,298 INFO L85 PathProgramCache]: Analyzing trace with hash -525096632, now seen corresponding path program 27 times [2024-05-12 10:44:07,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:07,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465784008] [2024-05-12 10:44:07,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:07,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:07,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:07,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465784008] [2024-05-12 10:44:07,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465784008] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:07,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:07,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:07,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184320650] [2024-05-12 10:44:07,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:07,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:07,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:07,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:07,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:07,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:07,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 423 transitions, 6049 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:07,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:07,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:07,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:08,851 INFO L124 PetriNetUnfolderBase]: 3968/6767 cut-off events. [2024-05-12 10:44:08,851 INFO L125 PetriNetUnfolderBase]: For 255589/255635 co-relation queries the response was YES. [2024-05-12 10:44:08,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39433 conditions, 6767 events. 3968/6767 cut-off events. For 255589/255635 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 48441 event pairs, 1240 based on Foata normal form. 13/6482 useless extension candidates. Maximal degree in co-relation 39287. Up to 5862 conditions per place. [2024-05-12 10:44:08,946 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 312 selfloop transitions, 123 changer transitions 0/449 dead transitions. [2024-05-12 10:44:08,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 449 transitions, 6985 flow [2024-05-12 10:44:08,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:44:08,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:44:08,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-05-12 10:44:08,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60790273556231 [2024-05-12 10:44:08,947 INFO L175 Difference]: Start difference. First operand has 351 places, 423 transitions, 6049 flow. Second operand 7 states and 200 transitions. [2024-05-12 10:44:08,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 449 transitions, 6985 flow [2024-05-12 10:44:09,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 449 transitions, 6469 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-05-12 10:44:09,911 INFO L231 Difference]: Finished difference. Result has 348 places, 423 transitions, 5793 flow [2024-05-12 10:44:09,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5533, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5793, PETRI_PLACES=348, PETRI_TRANSITIONS=423} [2024-05-12 10:44:09,911 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 297 predicate places. [2024-05-12 10:44:09,911 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 423 transitions, 5793 flow [2024-05-12 10:44:09,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:09,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:09,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:09,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-05-12 10:44:09,912 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:09,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:09,912 INFO L85 PathProgramCache]: Analyzing trace with hash -7166410, now seen corresponding path program 28 times [2024-05-12 10:44:09,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:09,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109002469] [2024-05-12 10:44:09,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:09,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:10,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:10,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:10,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109002469] [2024-05-12 10:44:10,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109002469] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:10,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:10,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:10,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751340434] [2024-05-12 10:44:10,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:10,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:10,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:10,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:10,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:10,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:10,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 423 transitions, 5793 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:10,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:10,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:10,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:11,533 INFO L124 PetriNetUnfolderBase]: 3975/6778 cut-off events. [2024-05-12 10:44:11,533 INFO L125 PetriNetUnfolderBase]: For 248861/248907 co-relation queries the response was YES. [2024-05-12 10:44:11,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39164 conditions, 6778 events. 3975/6778 cut-off events. For 248861/248907 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 48600 event pairs, 1240 based on Foata normal form. 13/6491 useless extension candidates. Maximal degree in co-relation 39019. Up to 5771 conditions per place. [2024-05-12 10:44:11,613 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 218 selfloop transitions, 221 changer transitions 0/453 dead transitions. [2024-05-12 10:44:11,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 453 transitions, 6945 flow [2024-05-12 10:44:11,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:44:11,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:44:11,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-05-12 10:44:11,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.551063829787234 [2024-05-12 10:44:11,614 INFO L175 Difference]: Start difference. First operand has 348 places, 423 transitions, 5793 flow. Second operand 10 states and 259 transitions. [2024-05-12 10:44:11,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 453 transitions, 6945 flow [2024-05-12 10:44:12,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 453 transitions, 6651 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 10:44:12,547 INFO L231 Difference]: Finished difference. Result has 351 places, 426 transitions, 6007 flow [2024-05-12 10:44:12,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5499, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6007, PETRI_PLACES=351, PETRI_TRANSITIONS=426} [2024-05-12 10:44:12,547 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 300 predicate places. [2024-05-12 10:44:12,548 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 426 transitions, 6007 flow [2024-05-12 10:44:12,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:12,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:12,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:12,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-05-12 10:44:12,548 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:12,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:12,548 INFO L85 PathProgramCache]: Analyzing trace with hash -918543164, now seen corresponding path program 29 times [2024-05-12 10:44:12,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:12,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095966396] [2024-05-12 10:44:12,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:12,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:12,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:12,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095966396] [2024-05-12 10:44:12,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095966396] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:12,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:12,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:12,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586317018] [2024-05-12 10:44:12,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:12,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:12,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:12,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:12,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:12,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:12,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 426 transitions, 6007 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:12,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:12,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:12,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:14,102 INFO L124 PetriNetUnfolderBase]: 3972/6774 cut-off events. [2024-05-12 10:44:14,103 INFO L125 PetriNetUnfolderBase]: For 251462/251508 co-relation queries the response was YES. [2024-05-12 10:44:14,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39356 conditions, 6774 events. 3972/6774 cut-off events. For 251462/251508 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 48457 event pairs, 1240 based on Foata normal form. 13/6487 useless extension candidates. Maximal degree in co-relation 39210. Up to 5768 conditions per place. [2024-05-12 10:44:14,198 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 230 selfloop transitions, 215 changer transitions 0/459 dead transitions. [2024-05-12 10:44:14,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 459 transitions, 6979 flow [2024-05-12 10:44:14,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:44:14,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:44:14,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 288 transitions. [2024-05-12 10:44:14,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570599613152805 [2024-05-12 10:44:14,199 INFO L175 Difference]: Start difference. First operand has 351 places, 426 transitions, 6007 flow. Second operand 11 states and 288 transitions. [2024-05-12 10:44:14,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 459 transitions, 6979 flow [2024-05-12 10:44:15,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 459 transitions, 6517 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-05-12 10:44:15,140 INFO L231 Difference]: Finished difference. Result has 353 places, 426 transitions, 5989 flow [2024-05-12 10:44:15,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5545, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5989, PETRI_PLACES=353, PETRI_TRANSITIONS=426} [2024-05-12 10:44:15,141 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 302 predicate places. [2024-05-12 10:44:15,141 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 426 transitions, 5989 flow [2024-05-12 10:44:15,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:15,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:15,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:15,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-05-12 10:44:15,141 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:15,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:15,142 INFO L85 PathProgramCache]: Analyzing trace with hash 95206, now seen corresponding path program 1 times [2024-05-12 10:44:15,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:15,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246566906] [2024-05-12 10:44:15,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:15,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:15,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:15,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246566906] [2024-05-12 10:44:15,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246566906] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:15,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:15,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:15,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966602532] [2024-05-12 10:44:15,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:15,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:15,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:15,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:15,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:15,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:15,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 426 transitions, 5989 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:15,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:15,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:15,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:16,786 INFO L124 PetriNetUnfolderBase]: 4078/6967 cut-off events. [2024-05-12 10:44:16,787 INFO L125 PetriNetUnfolderBase]: For 267596/267626 co-relation queries the response was YES. [2024-05-12 10:44:16,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40263 conditions, 6967 events. 4078/6967 cut-off events. For 267596/267626 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 50137 event pairs, 1266 based on Foata normal form. 6/6667 useless extension candidates. Maximal degree in co-relation 40118. Up to 6020 conditions per place. [2024-05-12 10:44:16,885 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 404 selfloop transitions, 38 changer transitions 0/456 dead transitions. [2024-05-12 10:44:16,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 456 transitions, 7018 flow [2024-05-12 10:44:16,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:44:16,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:44:16,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-05-12 10:44:16,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-05-12 10:44:16,886 INFO L175 Difference]: Start difference. First operand has 353 places, 426 transitions, 5989 flow. Second operand 10 states and 250 transitions. [2024-05-12 10:44:16,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 456 transitions, 7018 flow [2024-05-12 10:44:17,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 456 transitions, 6492 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-05-12 10:44:17,925 INFO L231 Difference]: Finished difference. Result has 351 places, 428 transitions, 5590 flow [2024-05-12 10:44:17,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5463, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5590, PETRI_PLACES=351, PETRI_TRANSITIONS=428} [2024-05-12 10:44:17,926 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 300 predicate places. [2024-05-12 10:44:17,926 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 428 transitions, 5590 flow [2024-05-12 10:44:17,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:17,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:17,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:17,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-05-12 10:44:17,926 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:17,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:17,927 INFO L85 PathProgramCache]: Analyzing trace with hash -317951160, now seen corresponding path program 2 times [2024-05-12 10:44:17,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:17,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304415637] [2024-05-12 10:44:17,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:17,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:18,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:18,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304415637] [2024-05-12 10:44:18,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304415637] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:18,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:18,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:18,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225047066] [2024-05-12 10:44:18,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:18,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:18,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:18,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:18,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:18,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:18,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 428 transitions, 5590 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:18,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:18,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:18,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:19,738 INFO L124 PetriNetUnfolderBase]: 4131/7108 cut-off events. [2024-05-12 10:44:19,739 INFO L125 PetriNetUnfolderBase]: For 262808/262838 co-relation queries the response was YES. [2024-05-12 10:44:19,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40507 conditions, 7108 events. 4131/7108 cut-off events. For 262808/262838 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 51652 event pairs, 1198 based on Foata normal form. 6/6814 useless extension candidates. Maximal degree in co-relation 40362. Up to 5783 conditions per place. [2024-05-12 10:44:19,815 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 391 selfloop transitions, 56 changer transitions 0/461 dead transitions. [2024-05-12 10:44:19,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 461 transitions, 6644 flow [2024-05-12 10:44:19,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:44:19,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:44:19,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-05-12 10:44:19,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5987841945288754 [2024-05-12 10:44:19,816 INFO L175 Difference]: Start difference. First operand has 351 places, 428 transitions, 5590 flow. Second operand 7 states and 197 transitions. [2024-05-12 10:44:19,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 461 transitions, 6644 flow [2024-05-12 10:44:20,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 461 transitions, 6564 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-05-12 10:44:20,698 INFO L231 Difference]: Finished difference. Result has 351 places, 429 transitions, 5652 flow [2024-05-12 10:44:20,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5510, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5652, PETRI_PLACES=351, PETRI_TRANSITIONS=429} [2024-05-12 10:44:20,698 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 300 predicate places. [2024-05-12 10:44:20,698 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 429 transitions, 5652 flow [2024-05-12 10:44:20,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:20,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:20,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:20,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-05-12 10:44:20,699 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:20,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:20,700 INFO L85 PathProgramCache]: Analyzing trace with hash -52253880, now seen corresponding path program 3 times [2024-05-12 10:44:20,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:20,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239293035] [2024-05-12 10:44:20,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:20,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:21,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:21,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239293035] [2024-05-12 10:44:21,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239293035] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:21,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:21,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:21,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517071481] [2024-05-12 10:44:21,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:21,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:21,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:21,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:21,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:21,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:21,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 429 transitions, 5652 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:21,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:21,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:21,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:22,299 INFO L124 PetriNetUnfolderBase]: 4118/7042 cut-off events. [2024-05-12 10:44:22,299 INFO L125 PetriNetUnfolderBase]: For 252038/252078 co-relation queries the response was YES. [2024-05-12 10:44:22,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40065 conditions, 7042 events. 4118/7042 cut-off events. For 252038/252078 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 50875 event pairs, 1158 based on Foata normal form. 18/6762 useless extension candidates. Maximal degree in co-relation 39919. Up to 5666 conditions per place. [2024-05-12 10:44:22,397 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 391 selfloop transitions, 56 changer transitions 0/461 dead transitions. [2024-05-12 10:44:22,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 461 transitions, 6686 flow [2024-05-12 10:44:22,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:44:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:44:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-05-12 10:44:22,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5957446808510638 [2024-05-12 10:44:22,398 INFO L175 Difference]: Start difference. First operand has 351 places, 429 transitions, 5652 flow. Second operand 7 states and 196 transitions. [2024-05-12 10:44:22,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 461 transitions, 6686 flow [2024-05-12 10:44:23,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 461 transitions, 6560 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-05-12 10:44:23,585 INFO L231 Difference]: Finished difference. Result has 353 places, 429 transitions, 5642 flow [2024-05-12 10:44:23,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5526, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5642, PETRI_PLACES=353, PETRI_TRANSITIONS=429} [2024-05-12 10:44:23,586 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 302 predicate places. [2024-05-12 10:44:23,586 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 429 transitions, 5642 flow [2024-05-12 10:44:23,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:23,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:23,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:23,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-05-12 10:44:23,586 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:23,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:23,587 INFO L85 PathProgramCache]: Analyzing trace with hash 879656034, now seen corresponding path program 1 times [2024-05-12 10:44:23,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:23,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562275264] [2024-05-12 10:44:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:23,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:23,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:23,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:23,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562275264] [2024-05-12 10:44:23,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562275264] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:23,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:23,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:23,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570267859] [2024-05-12 10:44:23,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:23,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:23,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:23,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:23,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:24,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:24,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 429 transitions, 5642 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:24,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:24,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:24,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:25,348 INFO L124 PetriNetUnfolderBase]: 4135/7053 cut-off events. [2024-05-12 10:44:25,348 INFO L125 PetriNetUnfolderBase]: For 238918/238948 co-relation queries the response was YES. [2024-05-12 10:44:25,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40184 conditions, 7053 events. 4135/7053 cut-off events. For 238918/238948 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 50884 event pairs, 1303 based on Foata normal form. 1/6743 useless extension candidates. Maximal degree in co-relation 40037. Up to 6229 conditions per place. [2024-05-12 10:44:25,453 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 416 selfloop transitions, 36 changer transitions 0/466 dead transitions. [2024-05-12 10:44:25,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 466 transitions, 6890 flow [2024-05-12 10:44:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:44:25,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:44:25,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-05-12 10:44:25,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771276595744681 [2024-05-12 10:44:25,453 INFO L175 Difference]: Start difference. First operand has 353 places, 429 transitions, 5642 flow. Second operand 8 states and 217 transitions. [2024-05-12 10:44:25,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 466 transitions, 6890 flow [2024-05-12 10:44:26,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 466 transitions, 6734 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-05-12 10:44:26,502 INFO L231 Difference]: Finished difference. Result has 355 places, 435 transitions, 5682 flow [2024-05-12 10:44:26,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5486, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5682, PETRI_PLACES=355, PETRI_TRANSITIONS=435} [2024-05-12 10:44:26,502 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 304 predicate places. [2024-05-12 10:44:26,503 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 435 transitions, 5682 flow [2024-05-12 10:44:26,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:26,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:26,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:26,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-05-12 10:44:26,503 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:26,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:26,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1872988, now seen corresponding path program 1 times [2024-05-12 10:44:26,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:26,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740422711] [2024-05-12 10:44:26,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:26,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:26,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:26,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:26,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740422711] [2024-05-12 10:44:26,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740422711] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:26,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:26,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:26,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241676285] [2024-05-12 10:44:26,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:26,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:26,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:26,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:26,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:26,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:26,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 435 transitions, 5682 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:26,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:26,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:26,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:28,129 INFO L124 PetriNetUnfolderBase]: 4158/7087 cut-off events. [2024-05-12 10:44:28,130 INFO L125 PetriNetUnfolderBase]: For 245610/245640 co-relation queries the response was YES. [2024-05-12 10:44:28,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39901 conditions, 7087 events. 4158/7087 cut-off events. For 245610/245640 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 51124 event pairs, 1303 based on Foata normal form. 1/6772 useless extension candidates. Maximal degree in co-relation 39754. Up to 6236 conditions per place. [2024-05-12 10:44:28,230 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 406 selfloop transitions, 52 changer transitions 0/472 dead transitions. [2024-05-12 10:44:28,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 472 transitions, 6977 flow [2024-05-12 10:44:28,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:44:28,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:44:28,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-05-12 10:44:28,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771276595744681 [2024-05-12 10:44:28,231 INFO L175 Difference]: Start difference. First operand has 355 places, 435 transitions, 5682 flow. Second operand 8 states and 217 transitions. [2024-05-12 10:44:28,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 472 transitions, 6977 flow [2024-05-12 10:44:29,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 472 transitions, 6873 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-05-12 10:44:29,284 INFO L231 Difference]: Finished difference. Result has 360 places, 444 transitions, 5855 flow [2024-05-12 10:44:29,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5583, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5855, PETRI_PLACES=360, PETRI_TRANSITIONS=444} [2024-05-12 10:44:29,285 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 309 predicate places. [2024-05-12 10:44:29,285 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 444 transitions, 5855 flow [2024-05-12 10:44:29,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:29,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:29,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:29,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-05-12 10:44:29,285 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:29,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:29,286 INFO L85 PathProgramCache]: Analyzing trace with hash 879776004, now seen corresponding path program 2 times [2024-05-12 10:44:29,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:29,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899337907] [2024-05-12 10:44:29,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:29,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:29,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:29,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:29,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899337907] [2024-05-12 10:44:29,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899337907] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:29,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:29,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:29,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949652593] [2024-05-12 10:44:29,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:29,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:29,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:29,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:29,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:29,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:29,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 444 transitions, 5855 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:29,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:29,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:29,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:30,972 INFO L124 PetriNetUnfolderBase]: 4165/7096 cut-off events. [2024-05-12 10:44:30,972 INFO L125 PetriNetUnfolderBase]: For 246660/246690 co-relation queries the response was YES. [2024-05-12 10:44:31,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40107 conditions, 7096 events. 4165/7096 cut-off events. For 246660/246690 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 51095 event pairs, 1302 based on Foata normal form. 1/6779 useless extension candidates. Maximal degree in co-relation 39957. Up to 6280 conditions per place. [2024-05-12 10:44:31,080 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 426 selfloop transitions, 34 changer transitions 0/474 dead transitions. [2024-05-12 10:44:31,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 474 transitions, 6885 flow [2024-05-12 10:44:31,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:44:31,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:44:31,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-05-12 10:44:31,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-05-12 10:44:31,080 INFO L175 Difference]: Start difference. First operand has 360 places, 444 transitions, 5855 flow. Second operand 8 states and 212 transitions. [2024-05-12 10:44:31,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 474 transitions, 6885 flow [2024-05-12 10:44:32,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 474 transitions, 6661 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-05-12 10:44:32,228 INFO L231 Difference]: Finished difference. Result has 363 places, 447 transitions, 5753 flow [2024-05-12 10:44:32,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5631, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5753, PETRI_PLACES=363, PETRI_TRANSITIONS=447} [2024-05-12 10:44:32,229 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 312 predicate places. [2024-05-12 10:44:32,229 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 447 transitions, 5753 flow [2024-05-12 10:44:32,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:32,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:32,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:32,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-05-12 10:44:32,229 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:32,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:32,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1106466538, now seen corresponding path program 2 times [2024-05-12 10:44:32,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:32,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414709701] [2024-05-12 10:44:32,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:32,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:32,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:32,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:32,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414709701] [2024-05-12 10:44:32,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414709701] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:32,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:32,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:32,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860246026] [2024-05-12 10:44:32,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:32,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:32,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:32,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:32,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:32,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:32,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 447 transitions, 5753 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:32,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:32,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:32,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:33,872 INFO L124 PetriNetUnfolderBase]: 4201/7149 cut-off events. [2024-05-12 10:44:33,872 INFO L125 PetriNetUnfolderBase]: For 254226/254256 co-relation queries the response was YES. [2024-05-12 10:44:33,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40550 conditions, 7149 events. 4201/7149 cut-off events. For 254226/254256 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 51500 event pairs, 1303 based on Foata normal form. 1/6824 useless extension candidates. Maximal degree in co-relation 40401. Up to 6278 conditions per place. [2024-05-12 10:44:33,973 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 412 selfloop transitions, 68 changer transitions 0/494 dead transitions. [2024-05-12 10:44:33,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 494 transitions, 7347 flow [2024-05-12 10:44:33,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:44:33,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:44:33,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-05-12 10:44:33,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5435203094777563 [2024-05-12 10:44:33,974 INFO L175 Difference]: Start difference. First operand has 363 places, 447 transitions, 5753 flow. Second operand 11 states and 281 transitions. [2024-05-12 10:44:33,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 494 transitions, 7347 flow [2024-05-12 10:44:35,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 494 transitions, 7227 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-05-12 10:44:35,276 INFO L231 Difference]: Finished difference. Result has 368 places, 462 transitions, 6031 flow [2024-05-12 10:44:35,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5647, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6031, PETRI_PLACES=368, PETRI_TRANSITIONS=462} [2024-05-12 10:44:35,276 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 317 predicate places. [2024-05-12 10:44:35,277 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 462 transitions, 6031 flow [2024-05-12 10:44:35,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:35,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:35,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:35,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-05-12 10:44:35,277 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:35,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:35,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1106229388, now seen corresponding path program 3 times [2024-05-12 10:44:35,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:35,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212422291] [2024-05-12 10:44:35,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:35,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:35,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:35,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:35,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212422291] [2024-05-12 10:44:35,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212422291] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:35,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:35,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:35,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445169008] [2024-05-12 10:44:35,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:35,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:35,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:35,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:35,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:35,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:35,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 462 transitions, 6031 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:35,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:35,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:35,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:36,889 INFO L124 PetriNetUnfolderBase]: 4198/7145 cut-off events. [2024-05-12 10:44:36,889 INFO L125 PetriNetUnfolderBase]: For 256352/256382 co-relation queries the response was YES. [2024-05-12 10:44:36,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40567 conditions, 7145 events. 4198/7145 cut-off events. For 256352/256382 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 51483 event pairs, 1303 based on Foata normal form. 1/6820 useless extension candidates. Maximal degree in co-relation 40416. Up to 6275 conditions per place. [2024-05-12 10:44:36,991 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 412 selfloop transitions, 66 changer transitions 0/492 dead transitions. [2024-05-12 10:44:36,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 492 transitions, 7221 flow [2024-05-12 10:44:36,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:44:36,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:44:36,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-05-12 10:44:36,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2024-05-12 10:44:36,992 INFO L175 Difference]: Start difference. First operand has 368 places, 462 transitions, 6031 flow. Second operand 10 states and 262 transitions. [2024-05-12 10:44:36,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 492 transitions, 7221 flow [2024-05-12 10:44:38,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 492 transitions, 7055 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-05-12 10:44:38,332 INFO L231 Difference]: Finished difference. Result has 374 places, 462 transitions, 6003 flow [2024-05-12 10:44:38,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5865, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6003, PETRI_PLACES=374, PETRI_TRANSITIONS=462} [2024-05-12 10:44:38,332 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 323 predicate places. [2024-05-12 10:44:38,333 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 462 transitions, 6003 flow [2024-05-12 10:44:38,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:38,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:38,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:38,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-05-12 10:44:38,333 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:38,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:38,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1056907524, now seen corresponding path program 3 times [2024-05-12 10:44:38,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:38,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981021610] [2024-05-12 10:44:38,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:38,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:38,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:38,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981021610] [2024-05-12 10:44:38,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981021610] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:38,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:38,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:38,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843137159] [2024-05-12 10:44:38,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:38,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:38,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:38,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:38,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:38,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:38,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 462 transitions, 6003 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:38,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:38,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:38,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:40,075 INFO L124 PetriNetUnfolderBase]: 4205/7156 cut-off events. [2024-05-12 10:44:40,076 INFO L125 PetriNetUnfolderBase]: For 261505/261535 co-relation queries the response was YES. [2024-05-12 10:44:40,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40658 conditions, 7156 events. 4205/7156 cut-off events. For 261505/261535 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 51556 event pairs, 1302 based on Foata normal form. 1/6829 useless extension candidates. Maximal degree in co-relation 40506. Up to 6325 conditions per place. [2024-05-12 10:44:40,166 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 437 selfloop transitions, 44 changer transitions 0/495 dead transitions. [2024-05-12 10:44:40,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 495 transitions, 7087 flow [2024-05-12 10:44:40,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:44:40,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:44:40,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 275 transitions. [2024-05-12 10:44:40,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-05-12 10:44:40,167 INFO L175 Difference]: Start difference. First operand has 374 places, 462 transitions, 6003 flow. Second operand 11 states and 275 transitions. [2024-05-12 10:44:40,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 495 transitions, 7087 flow [2024-05-12 10:44:41,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 495 transitions, 6935 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 10:44:41,439 INFO L231 Difference]: Finished difference. Result has 376 places, 465 transitions, 5999 flow [2024-05-12 10:44:41,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5851, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5999, PETRI_PLACES=376, PETRI_TRANSITIONS=465} [2024-05-12 10:44:41,439 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 325 predicate places. [2024-05-12 10:44:41,439 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 465 transitions, 5999 flow [2024-05-12 10:44:41,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:41,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:41,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:41,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-05-12 10:44:41,440 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:41,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:41,440 INFO L85 PathProgramCache]: Analyzing trace with hash 998560866, now seen corresponding path program 4 times [2024-05-12 10:44:41,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:41,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153070963] [2024-05-12 10:44:41,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:41,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:41,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:41,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:41,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153070963] [2024-05-12 10:44:41,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153070963] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:41,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:41,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:41,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876442848] [2024-05-12 10:44:41,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:41,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:41,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:41,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:41,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:41,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:41,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 465 transitions, 5999 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:41,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:41,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:41,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:43,087 INFO L124 PetriNetUnfolderBase]: 4232/7199 cut-off events. [2024-05-12 10:44:43,088 INFO L125 PetriNetUnfolderBase]: For 274854/274915 co-relation queries the response was YES. [2024-05-12 10:44:43,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41200 conditions, 7199 events. 4232/7199 cut-off events. For 274854/274915 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 51893 event pairs, 1315 based on Foata normal form. 18/6885 useless extension candidates. Maximal degree in co-relation 41047. Up to 6086 conditions per place. [2024-05-12 10:44:43,195 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 364 selfloop transitions, 130 changer transitions 0/508 dead transitions. [2024-05-12 10:44:43,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 508 transitions, 7975 flow [2024-05-12 10:44:43,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:44:43,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:44:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2024-05-12 10:44:43,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.598404255319149 [2024-05-12 10:44:43,196 INFO L175 Difference]: Start difference. First operand has 376 places, 465 transitions, 5999 flow. Second operand 8 states and 225 transitions. [2024-05-12 10:44:43,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 508 transitions, 7975 flow [2024-05-12 10:44:44,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 508 transitions, 7829 flow, removed 16 selfloop flow, removed 12 redundant places. [2024-05-12 10:44:44,680 INFO L231 Difference]: Finished difference. Result has 372 places, 477 transitions, 6381 flow [2024-05-12 10:44:44,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5853, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6381, PETRI_PLACES=372, PETRI_TRANSITIONS=477} [2024-05-12 10:44:44,681 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 321 predicate places. [2024-05-12 10:44:44,681 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 477 transitions, 6381 flow [2024-05-12 10:44:44,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:44,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:44,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:44,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-05-12 10:44:44,681 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:44,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:44,681 INFO L85 PathProgramCache]: Analyzing trace with hash 998681022, now seen corresponding path program 4 times [2024-05-12 10:44:44,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:44,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947389303] [2024-05-12 10:44:44,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:44,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:45,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:45,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947389303] [2024-05-12 10:44:45,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947389303] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:45,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:45,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:45,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905027276] [2024-05-12 10:44:45,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:45,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:45,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:45,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:45,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:45,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:45,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 477 transitions, 6381 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:45,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:45,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:45,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:46,323 INFO L124 PetriNetUnfolderBase]: 4255/7234 cut-off events. [2024-05-12 10:44:46,324 INFO L125 PetriNetUnfolderBase]: For 286304/286350 co-relation queries the response was YES. [2024-05-12 10:44:46,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41983 conditions, 7234 events. 4255/7234 cut-off events. For 286304/286350 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 52152 event pairs, 1312 based on Foata normal form. 13/6909 useless extension candidates. Maximal degree in co-relation 41831. Up to 6181 conditions per place. [2024-05-12 10:44:46,427 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 370 selfloop transitions, 132 changer transitions 0/516 dead transitions. [2024-05-12 10:44:46,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 516 transitions, 8184 flow [2024-05-12 10:44:46,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:44:46,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:44:46,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2024-05-12 10:44:46,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851063829787234 [2024-05-12 10:44:46,428 INFO L175 Difference]: Start difference. First operand has 372 places, 477 transitions, 6381 flow. Second operand 8 states and 220 transitions. [2024-05-12 10:44:46,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 516 transitions, 8184 flow [2024-05-12 10:44:47,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 516 transitions, 8011 flow, removed 52 selfloop flow, removed 2 redundant places. [2024-05-12 10:44:47,854 INFO L231 Difference]: Finished difference. Result has 379 places, 489 transitions, 6725 flow [2024-05-12 10:44:47,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6208, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6725, PETRI_PLACES=379, PETRI_TRANSITIONS=489} [2024-05-12 10:44:47,854 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 328 predicate places. [2024-05-12 10:44:47,854 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 489 transitions, 6725 flow [2024-05-12 10:44:47,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:47,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:47,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:47,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-05-12 10:44:47,855 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:47,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:47,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1197862656, now seen corresponding path program 5 times [2024-05-12 10:44:47,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:47,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526256192] [2024-05-12 10:44:47,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:47,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:48,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:48,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:48,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526256192] [2024-05-12 10:44:48,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526256192] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:48,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:48,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:48,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488132013] [2024-05-12 10:44:48,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:48,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:48,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:48,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:48,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:48,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:48,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 489 transitions, 6725 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:48,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:48,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:48,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:49,541 INFO L124 PetriNetUnfolderBase]: 4262/7248 cut-off events. [2024-05-12 10:44:49,541 INFO L125 PetriNetUnfolderBase]: For 292979/293040 co-relation queries the response was YES. [2024-05-12 10:44:49,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42408 conditions, 7248 events. 4262/7248 cut-off events. For 292979/293040 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 52277 event pairs, 1315 based on Foata normal form. 18/6927 useless extension candidates. Maximal degree in co-relation 42253. Up to 6121 conditions per place. [2024-05-12 10:44:49,654 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 368 selfloop transitions, 140 changer transitions 0/522 dead transitions. [2024-05-12 10:44:49,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 522 transitions, 8365 flow [2024-05-12 10:44:49,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:44:49,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:44:49,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2024-05-12 10:44:49,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5930851063829787 [2024-05-12 10:44:49,654 INFO L175 Difference]: Start difference. First operand has 379 places, 489 transitions, 6725 flow. Second operand 8 states and 223 transitions. [2024-05-12 10:44:49,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 522 transitions, 8365 flow [2024-05-12 10:44:51,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 522 transitions, 8201 flow, removed 42 selfloop flow, removed 2 redundant places. [2024-05-12 10:44:51,284 INFO L231 Difference]: Finished difference. Result has 385 places, 492 transitions, 6893 flow [2024-05-12 10:44:51,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6561, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6893, PETRI_PLACES=385, PETRI_TRANSITIONS=492} [2024-05-12 10:44:51,284 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 334 predicate places. [2024-05-12 10:44:51,284 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 492 transitions, 6893 flow [2024-05-12 10:44:51,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:51,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:51,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:51,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-05-12 10:44:51,284 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:51,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:51,285 INFO L85 PathProgramCache]: Analyzing trace with hash 158834978, now seen corresponding path program 6 times [2024-05-12 10:44:51,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:51,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660088047] [2024-05-12 10:44:51,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:51,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:51,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:51,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660088047] [2024-05-12 10:44:51,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660088047] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:51,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:51,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:51,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804603253] [2024-05-12 10:44:51,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:51,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:51,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:51,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:51,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:51,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 492 transitions, 6893 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:51,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:51,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:51,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:52,989 INFO L124 PetriNetUnfolderBase]: 4269/7258 cut-off events. [2024-05-12 10:44:52,989 INFO L125 PetriNetUnfolderBase]: For 299254/299300 co-relation queries the response was YES. [2024-05-12 10:44:53,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42849 conditions, 7258 events. 4269/7258 cut-off events. For 299254/299300 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 52416 event pairs, 1308 based on Foata normal form. 13/6929 useless extension candidates. Maximal degree in co-relation 42692. Up to 6323 conditions per place. [2024-05-12 10:44:53,095 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 431 selfloop transitions, 74 changer transitions 0/519 dead transitions. [2024-05-12 10:44:53,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 519 transitions, 8011 flow [2024-05-12 10:44:53,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:44:53,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:44:53,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-05-12 10:44:53,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5664893617021277 [2024-05-12 10:44:53,096 INFO L175 Difference]: Start difference. First operand has 385 places, 492 transitions, 6893 flow. Second operand 8 states and 213 transitions. [2024-05-12 10:44:53,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 519 transitions, 8011 flow [2024-05-12 10:44:54,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 519 transitions, 7685 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-05-12 10:44:54,490 INFO L231 Difference]: Finished difference. Result has 387 places, 495 transitions, 6775 flow [2024-05-12 10:44:54,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6573, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6775, PETRI_PLACES=387, PETRI_TRANSITIONS=495} [2024-05-12 10:44:54,491 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 336 predicate places. [2024-05-12 10:44:54,491 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 495 transitions, 6775 flow [2024-05-12 10:44:54,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:54,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:54,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:54,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-05-12 10:44:54,491 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:54,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:54,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1208338176, now seen corresponding path program 7 times [2024-05-12 10:44:54,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:54,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924302004] [2024-05-12 10:44:54,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:54,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:54,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:54,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:54,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924302004] [2024-05-12 10:44:54,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924302004] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:54,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:54,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:54,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335113750] [2024-05-12 10:44:54,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:54,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:54,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:54,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:54,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:54,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:54,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 495 transitions, 6775 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:54,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:54,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:54,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:56,306 INFO L124 PetriNetUnfolderBase]: 4276/7268 cut-off events. [2024-05-12 10:44:56,306 INFO L125 PetriNetUnfolderBase]: For 304317/304378 co-relation queries the response was YES. [2024-05-12 10:44:56,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42715 conditions, 7268 events. 4276/7268 cut-off events. For 304317/304378 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 52384 event pairs, 1315 based on Foata normal form. 18/6943 useless extension candidates. Maximal degree in co-relation 42557. Up to 6137 conditions per place. [2024-05-12 10:44:56,391 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 365 selfloop transitions, 145 changer transitions 0/524 dead transitions. [2024-05-12 10:44:56,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 524 transitions, 8245 flow [2024-05-12 10:44:56,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:44:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:44:56,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-05-12 10:44:56,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5824468085106383 [2024-05-12 10:44:56,392 INFO L175 Difference]: Start difference. First operand has 387 places, 495 transitions, 6775 flow. Second operand 8 states and 219 transitions. [2024-05-12 10:44:56,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 524 transitions, 8245 flow [2024-05-12 10:44:57,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 524 transitions, 8071 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-05-12 10:44:57,811 INFO L231 Difference]: Finished difference. Result has 388 places, 498 transitions, 6939 flow [2024-05-12 10:44:57,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6601, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6939, PETRI_PLACES=388, PETRI_TRANSITIONS=498} [2024-05-12 10:44:57,812 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 337 predicate places. [2024-05-12 10:44:57,812 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 498 transitions, 6939 flow [2024-05-12 10:44:57,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:57,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:57,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:57,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-05-12 10:44:57,812 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:57,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:57,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1372743634, now seen corresponding path program 8 times [2024-05-12 10:44:57,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:57,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884474077] [2024-05-12 10:44:57,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:57,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:58,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:58,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:58,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884474077] [2024-05-12 10:44:58,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884474077] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:58,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:58,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:44:58,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301463416] [2024-05-12 10:44:58,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:58,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:44:58,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:58,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:44:58,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:44:58,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:44:58,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 498 transitions, 6939 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:58,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:58,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:44:58,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:59,495 INFO L124 PetriNetUnfolderBase]: 4299/7305 cut-off events. [2024-05-12 10:44:59,495 INFO L125 PetriNetUnfolderBase]: For 314936/314982 co-relation queries the response was YES. [2024-05-12 10:44:59,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43342 conditions, 7305 events. 4299/7305 cut-off events. For 314936/314982 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 52724 event pairs, 1308 based on Foata normal form. 13/6969 useless extension candidates. Maximal degree in co-relation 43184. Up to 6348 conditions per place. [2024-05-12 10:44:59,603 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 429 selfloop transitions, 88 changer transitions 0/531 dead transitions. [2024-05-12 10:44:59,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 531 transitions, 8345 flow [2024-05-12 10:44:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:44:59,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:44:59,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-05-12 10:44:59,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404255319148936 [2024-05-12 10:44:59,604 INFO L175 Difference]: Start difference. First operand has 388 places, 498 transitions, 6939 flow. Second operand 10 states and 254 transitions. [2024-05-12 10:44:59,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 531 transitions, 8345 flow [2024-05-12 10:45:01,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 531 transitions, 8072 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-05-12 10:45:01,204 INFO L231 Difference]: Finished difference. Result has 394 places, 507 transitions, 7004 flow [2024-05-12 10:45:01,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6677, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7004, PETRI_PLACES=394, PETRI_TRANSITIONS=507} [2024-05-12 10:45:01,205 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 343 predicate places. [2024-05-12 10:45:01,205 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 507 transitions, 7004 flow [2024-05-12 10:45:01,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:01,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:01,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:01,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-05-12 10:45:01,205 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:01,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:01,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1372743820, now seen corresponding path program 5 times [2024-05-12 10:45:01,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:01,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737483944] [2024-05-12 10:45:01,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:01,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:01,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:01,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:01,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737483944] [2024-05-12 10:45:01,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737483944] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:01,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:01,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:45:01,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306035394] [2024-05-12 10:45:01,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:01,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:45:01,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:01,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:45:01,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:45:01,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:45:01,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 507 transitions, 7004 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:01,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:01,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:45:01,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:02,898 INFO L124 PetriNetUnfolderBase]: 4316/7331 cut-off events. [2024-05-12 10:45:02,898 INFO L125 PetriNetUnfolderBase]: For 324757/324803 co-relation queries the response was YES. [2024-05-12 10:45:02,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43500 conditions, 7331 events. 4316/7331 cut-off events. For 324757/324803 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 52819 event pairs, 1312 based on Foata normal form. 13/6991 useless extension candidates. Maximal degree in co-relation 43340. Up to 6254 conditions per place. [2024-05-12 10:45:03,005 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 389 selfloop transitions, 134 changer transitions 0/537 dead transitions. [2024-05-12 10:45:03,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 537 transitions, 8736 flow [2024-05-12 10:45:03,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:45:03,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:45:03,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-05-12 10:45:03,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797872340425532 [2024-05-12 10:45:03,006 INFO L175 Difference]: Start difference. First operand has 394 places, 507 transitions, 7004 flow. Second operand 8 states and 218 transitions. [2024-05-12 10:45:03,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 537 transitions, 8736 flow [2024-05-12 10:45:04,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 537 transitions, 8564 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-05-12 10:45:04,744 INFO L231 Difference]: Finished difference. Result has 397 places, 513 transitions, 7206 flow [2024-05-12 10:45:04,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6832, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7206, PETRI_PLACES=397, PETRI_TRANSITIONS=513} [2024-05-12 10:45:04,745 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 346 predicate places. [2024-05-12 10:45:04,745 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 513 transitions, 7206 flow [2024-05-12 10:45:04,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:04,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:04,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:04,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-05-12 10:45:04,746 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:04,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:04,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1373129770, now seen corresponding path program 6 times [2024-05-12 10:45:04,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:04,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38669966] [2024-05-12 10:45:04,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:04,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:05,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:05,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:05,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38669966] [2024-05-12 10:45:05,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38669966] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:05,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:05,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:45:05,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605085728] [2024-05-12 10:45:05,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:05,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:45:05,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:05,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:45:05,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:45:05,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:45:05,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 513 transitions, 7206 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:05,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:05,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:45:05,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:06,442 INFO L124 PetriNetUnfolderBase]: 4313/7325 cut-off events. [2024-05-12 10:45:06,442 INFO L125 PetriNetUnfolderBase]: For 327707/327753 co-relation queries the response was YES. [2024-05-12 10:45:06,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43568 conditions, 7325 events. 4313/7325 cut-off events. For 327707/327753 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 52811 event pairs, 1312 based on Foata normal form. 13/6985 useless extension candidates. Maximal degree in co-relation 43407. Up to 6251 conditions per place. [2024-05-12 10:45:06,549 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 386 selfloop transitions, 136 changer transitions 0/536 dead transitions. [2024-05-12 10:45:06,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 536 transitions, 8662 flow [2024-05-12 10:45:06,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:45:06,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:45:06,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-05-12 10:45:06,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-05-12 10:45:06,550 INFO L175 Difference]: Start difference. First operand has 397 places, 513 transitions, 7206 flow. Second operand 8 states and 216 transitions. [2024-05-12 10:45:06,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 536 transitions, 8662 flow [2024-05-12 10:45:08,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 536 transitions, 8404 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-05-12 10:45:08,093 INFO L231 Difference]: Finished difference. Result has 401 places, 513 transitions, 7226 flow [2024-05-12 10:45:08,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6948, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7226, PETRI_PLACES=401, PETRI_TRANSITIONS=513} [2024-05-12 10:45:08,094 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 350 predicate places. [2024-05-12 10:45:08,094 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 513 transitions, 7226 flow [2024-05-12 10:45:08,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:08,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:08,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:08,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-05-12 10:45:08,094 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:08,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:08,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1372951024, now seen corresponding path program 9 times [2024-05-12 10:45:08,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:08,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941789815] [2024-05-12 10:45:08,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:08,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:08,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:08,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941789815] [2024-05-12 10:45:08,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941789815] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:08,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:08,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:45:08,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200843794] [2024-05-12 10:45:08,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:08,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:45:08,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:08,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:45:08,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:45:08,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:45:08,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 513 transitions, 7226 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:08,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:08,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:45:08,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:09,794 INFO L124 PetriNetUnfolderBase]: 4310/7321 cut-off events. [2024-05-12 10:45:09,794 INFO L125 PetriNetUnfolderBase]: For 329994/330040 co-relation queries the response was YES. [2024-05-12 10:45:09,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43505 conditions, 7321 events. 4310/7321 cut-off events. For 329994/330040 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 52804 event pairs, 1308 based on Foata normal form. 13/6981 useless extension candidates. Maximal degree in co-relation 43343. Up to 6363 conditions per place. [2024-05-12 10:45:09,908 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 433 selfloop transitions, 87 changer transitions 0/534 dead transitions. [2024-05-12 10:45:09,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 534 transitions, 8318 flow [2024-05-12 10:45:09,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:45:09,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:45:09,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-05-12 10:45:09,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611702127659575 [2024-05-12 10:45:09,909 INFO L175 Difference]: Start difference. First operand has 401 places, 513 transitions, 7226 flow. Second operand 8 states and 211 transitions. [2024-05-12 10:45:09,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 534 transitions, 8318 flow [2024-05-12 10:45:11,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 534 transitions, 8079 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-05-12 10:45:11,630 INFO L231 Difference]: Finished difference. Result has 403 places, 513 transitions, 7167 flow [2024-05-12 10:45:11,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6987, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7167, PETRI_PLACES=403, PETRI_TRANSITIONS=513} [2024-05-12 10:45:11,631 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 352 predicate places. [2024-05-12 10:45:11,631 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 513 transitions, 7167 flow [2024-05-12 10:45:11,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:11,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:11,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:11,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-05-12 10:45:11,631 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:11,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:11,631 INFO L85 PathProgramCache]: Analyzing trace with hash -349929750, now seen corresponding path program 7 times [2024-05-12 10:45:11,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:11,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660822855] [2024-05-12 10:45:11,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:11,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:12,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:12,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:12,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660822855] [2024-05-12 10:45:12,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660822855] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:12,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:12,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:45:12,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727684401] [2024-05-12 10:45:12,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:12,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:45:12,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:12,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:45:12,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:45:12,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:45:12,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 513 transitions, 7167 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:12,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:12,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:45:12,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:13,499 INFO L124 PetriNetUnfolderBase]: 4350/7372 cut-off events. [2024-05-12 10:45:13,499 INFO L125 PetriNetUnfolderBase]: For 344749/344779 co-relation queries the response was YES. [2024-05-12 10:45:13,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44091 conditions, 7372 events. 4350/7372 cut-off events. For 344749/344779 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 53107 event pairs, 1303 based on Foata normal form. 1/7010 useless extension candidates. Maximal degree in co-relation 43928. Up to 6496 conditions per place. [2024-05-12 10:45:13,595 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 479 selfloop transitions, 57 changer transitions 0/550 dead transitions. [2024-05-12 10:45:13,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 550 transitions, 8928 flow [2024-05-12 10:45:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:45:13,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:45:13,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-05-12 10:45:13,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2024-05-12 10:45:13,595 INFO L175 Difference]: Start difference. First operand has 403 places, 513 transitions, 7167 flow. Second operand 10 states and 252 transitions. [2024-05-12 10:45:13,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 550 transitions, 8928 flow [2024-05-12 10:45:15,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 550 transitions, 8748 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 10:45:15,137 INFO L231 Difference]: Finished difference. Result has 407 places, 528 transitions, 7400 flow [2024-05-12 10:45:15,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6993, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7400, PETRI_PLACES=407, PETRI_TRANSITIONS=528} [2024-05-12 10:45:15,137 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 356 predicate places. [2024-05-12 10:45:15,137 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 528 transitions, 7400 flow [2024-05-12 10:45:15,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:15,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:15,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:15,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-05-12 10:45:15,138 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:15,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:15,138 INFO L85 PathProgramCache]: Analyzing trace with hash -399488578, now seen corresponding path program 8 times [2024-05-12 10:45:15,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:15,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049082006] [2024-05-12 10:45:15,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:15,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:15,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:15,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049082006] [2024-05-12 10:45:15,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049082006] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:15,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:15,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:45:15,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466692170] [2024-05-12 10:45:15,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:15,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:45:15,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:15,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:45:15,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:45:15,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:45:15,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 528 transitions, 7400 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:15,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:15,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:45:15,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:16,913 INFO L124 PetriNetUnfolderBase]: 4347/7368 cut-off events. [2024-05-12 10:45:16,914 INFO L125 PetriNetUnfolderBase]: For 346915/346945 co-relation queries the response was YES. [2024-05-12 10:45:17,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43992 conditions, 7368 events. 4347/7368 cut-off events. For 346915/346945 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 53088 event pairs, 1303 based on Foata normal form. 1/7006 useless extension candidates. Maximal degree in co-relation 43827. Up to 6493 conditions per place. [2024-05-12 10:45:17,027 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 477 selfloop transitions, 56 changer transitions 0/547 dead transitions. [2024-05-12 10:45:17,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 547 transitions, 8696 flow [2024-05-12 10:45:17,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:45:17,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:45:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-05-12 10:45:17,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5558510638297872 [2024-05-12 10:45:17,028 INFO L175 Difference]: Start difference. First operand has 407 places, 528 transitions, 7400 flow. Second operand 8 states and 209 transitions. [2024-05-12 10:45:17,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 547 transitions, 8696 flow [2024-05-12 10:45:18,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 547 transitions, 8618 flow, removed 35 selfloop flow, removed 1 redundant places. [2024-05-12 10:45:18,762 INFO L231 Difference]: Finished difference. Result has 414 places, 528 transitions, 7440 flow [2024-05-12 10:45:18,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7322, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7440, PETRI_PLACES=414, PETRI_TRANSITIONS=528} [2024-05-12 10:45:18,762 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 363 predicate places. [2024-05-12 10:45:18,762 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 528 transitions, 7440 flow [2024-05-12 10:45:18,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:18,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:18,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:18,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-05-12 10:45:18,763 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:18,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:18,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1483554560, now seen corresponding path program 10 times [2024-05-12 10:45:18,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:18,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662474638] [2024-05-12 10:45:18,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:18,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:19,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:19,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:19,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662474638] [2024-05-12 10:45:19,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662474638] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:19,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:19,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:45:19,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272788104] [2024-05-12 10:45:19,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:19,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:45:19,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:19,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:45:19,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:45:19,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:45:19,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 528 transitions, 7440 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:19,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:19,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:45:19,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:20,515 INFO L124 PetriNetUnfolderBase]: 4354/7379 cut-off events. [2024-05-12 10:45:20,515 INFO L125 PetriNetUnfolderBase]: For 353857/353887 co-relation queries the response was YES. [2024-05-12 10:45:20,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44234 conditions, 7379 events. 4354/7379 cut-off events. For 353857/353887 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 53113 event pairs, 1302 based on Foata normal form. 1/7015 useless extension candidates. Maximal degree in co-relation 44067. Up to 6538 conditions per place. [2024-05-12 10:45:20,630 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 504 selfloop transitions, 31 changer transitions 0/549 dead transitions. [2024-05-12 10:45:20,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 549 transitions, 8614 flow [2024-05-12 10:45:20,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:45:20,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:45:20,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-05-12 10:45:20,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2024-05-12 10:45:20,631 INFO L175 Difference]: Start difference. First operand has 414 places, 528 transitions, 7440 flow. Second operand 8 states and 203 transitions. [2024-05-12 10:45:20,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 549 transitions, 8614 flow [2024-05-12 10:45:22,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 549 transitions, 8502 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 10:45:22,244 INFO L231 Difference]: Finished difference. Result has 415 places, 531 transitions, 7462 flow [2024-05-12 10:45:22,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7328, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7462, PETRI_PLACES=415, PETRI_TRANSITIONS=531} [2024-05-12 10:45:22,245 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 364 predicate places. [2024-05-12 10:45:22,245 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 531 transitions, 7462 flow [2024-05-12 10:45:22,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:22,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:22,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:22,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-05-12 10:45:22,245 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:22,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:22,245 INFO L85 PathProgramCache]: Analyzing trace with hash -23591878, now seen corresponding path program 9 times [2024-05-12 10:45:22,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:22,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70481511] [2024-05-12 10:45:22,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:22,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:22,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:22,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:22,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70481511] [2024-05-12 10:45:22,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70481511] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:22,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:22,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:45:22,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491345573] [2024-05-12 10:45:22,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:22,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:45:22,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:22,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:45:22,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:45:22,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:45:22,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 531 transitions, 7462 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:22,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:22,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:45:22,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:24,015 INFO L124 PetriNetUnfolderBase]: 4393/7445 cut-off events. [2024-05-12 10:45:24,015 INFO L125 PetriNetUnfolderBase]: For 370539/370585 co-relation queries the response was YES. [2024-05-12 10:45:24,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44897 conditions, 7445 events. 4393/7445 cut-off events. For 370539/370585 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 53628 event pairs, 1312 based on Foata normal form. 13/7086 useless extension candidates. Maximal degree in co-relation 44729. Up to 6334 conditions per place. [2024-05-12 10:45:24,131 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 388 selfloop transitions, 165 changer transitions 0/567 dead transitions. [2024-05-12 10:45:24,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 567 transitions, 9436 flow [2024-05-12 10:45:24,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:45:24,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:45:24,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-05-12 10:45:24,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2024-05-12 10:45:24,132 INFO L175 Difference]: Start difference. First operand has 415 places, 531 transitions, 7462 flow. Second operand 8 states and 214 transitions. [2024-05-12 10:45:24,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 567 transitions, 9436 flow [2024-05-12 10:45:26,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 567 transitions, 9350 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-05-12 10:45:26,285 INFO L231 Difference]: Finished difference. Result has 420 places, 546 transitions, 8009 flow [2024-05-12 10:45:26,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7376, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8009, PETRI_PLACES=420, PETRI_TRANSITIONS=546} [2024-05-12 10:45:26,296 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 369 predicate places. [2024-05-12 10:45:26,296 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 546 transitions, 8009 flow [2024-05-12 10:45:26,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:26,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:26,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:26,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-05-12 10:45:26,297 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:26,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:26,297 INFO L85 PathProgramCache]: Analyzing trace with hash -28353478, now seen corresponding path program 10 times [2024-05-12 10:45:26,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:26,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315421087] [2024-05-12 10:45:26,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:26,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:26,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:26,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315421087] [2024-05-12 10:45:26,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315421087] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:26,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:26,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:45:26,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194563662] [2024-05-12 10:45:26,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:26,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:45:26,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:26,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:45:26,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:45:26,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:45:26,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 546 transitions, 8009 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:26,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:26,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:45:26,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:28,106 INFO L124 PetriNetUnfolderBase]: 4390/7436 cut-off events. [2024-05-12 10:45:28,106 INFO L125 PetriNetUnfolderBase]: For 373753/373783 co-relation queries the response was YES. [2024-05-12 10:45:28,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45237 conditions, 7436 events. 4390/7436 cut-off events. For 373753/373783 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 53551 event pairs, 1303 based on Foata normal form. 1/7064 useless extension candidates. Maximal degree in co-relation 45068. Up to 6559 conditions per place. [2024-05-12 10:45:28,222 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 501 selfloop transitions, 49 changer transitions 0/564 dead transitions. [2024-05-12 10:45:28,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 564 transitions, 9153 flow [2024-05-12 10:45:28,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:45:28,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:45:28,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-05-12 10:45:28,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5478723404255319 [2024-05-12 10:45:28,223 INFO L175 Difference]: Start difference. First operand has 420 places, 546 transitions, 8009 flow. Second operand 8 states and 206 transitions. [2024-05-12 10:45:28,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 564 transitions, 9153 flow [2024-05-12 10:45:30,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 564 transitions, 8912 flow, removed 45 selfloop flow, removed 2 redundant places. [2024-05-12 10:45:30,196 INFO L231 Difference]: Finished difference. Result has 426 places, 546 transitions, 7872 flow [2024-05-12 10:45:30,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7768, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7872, PETRI_PLACES=426, PETRI_TRANSITIONS=546} [2024-05-12 10:45:30,197 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 375 predicate places. [2024-05-12 10:45:30,197 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 546 transitions, 7872 flow [2024-05-12 10:45:30,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:30,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:30,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:30,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-05-12 10:45:30,197 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:30,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:30,198 INFO L85 PathProgramCache]: Analyzing trace with hash -251878978, now seen corresponding path program 11 times [2024-05-12 10:45:30,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:30,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400173730] [2024-05-12 10:45:30,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:30,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:30,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:30,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:30,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400173730] [2024-05-12 10:45:30,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400173730] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:30,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:30,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:45:30,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271156644] [2024-05-12 10:45:30,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:30,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:45:30,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:30,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:45:30,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:45:30,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:45:30,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 546 transitions, 7872 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:30,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:30,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:45:30,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:31,978 INFO L124 PetriNetUnfolderBase]: 4397/7452 cut-off events. [2024-05-12 10:45:31,978 INFO L125 PetriNetUnfolderBase]: For 381455/381501 co-relation queries the response was YES. [2024-05-12 10:45:32,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45018 conditions, 7452 events. 4397/7452 cut-off events. For 381455/381501 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 53682 event pairs, 1312 based on Foata normal form. 13/7091 useless extension candidates. Maximal degree in co-relation 44848. Up to 6339 conditions per place. [2024-05-12 10:45:32,094 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 395 selfloop transitions, 161 changer transitions 0/570 dead transitions. [2024-05-12 10:45:32,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 570 transitions, 9658 flow [2024-05-12 10:45:32,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:45:32,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:45:32,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-05-12 10:45:32,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5718085106382979 [2024-05-12 10:45:32,095 INFO L175 Difference]: Start difference. First operand has 426 places, 546 transitions, 7872 flow. Second operand 8 states and 215 transitions. [2024-05-12 10:45:32,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 570 transitions, 9658 flow [2024-05-12 10:45:34,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 570 transitions, 9534 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-05-12 10:45:34,065 INFO L231 Difference]: Finished difference. Result has 426 places, 549 transitions, 8124 flow [2024-05-12 10:45:34,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7748, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8124, PETRI_PLACES=426, PETRI_TRANSITIONS=549} [2024-05-12 10:45:34,066 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 375 predicate places. [2024-05-12 10:45:34,066 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 549 transitions, 8124 flow [2024-05-12 10:45:34,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:34,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:34,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:34,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-05-12 10:45:34,066 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:34,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:34,067 INFO L85 PathProgramCache]: Analyzing trace with hash -251879164, now seen corresponding path program 11 times [2024-05-12 10:45:34,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:34,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747766781] [2024-05-12 10:45:34,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:34,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:34,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:34,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:34,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747766781] [2024-05-12 10:45:34,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747766781] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:34,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:34,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:45:34,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493500755] [2024-05-12 10:45:34,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:34,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:45:34,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:34,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:45:34,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:45:34,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:45:34,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 549 transitions, 8124 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:34,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:34,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:45:34,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:35,921 INFO L124 PetriNetUnfolderBase]: 4424/7493 cut-off events. [2024-05-12 10:45:35,921 INFO L125 PetriNetUnfolderBase]: For 399689/399735 co-relation queries the response was YES. [2024-05-12 10:45:36,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45930 conditions, 7493 events. 4424/7493 cut-off events. For 399689/399735 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 54018 event pairs, 1308 based on Foata normal form. 13/7126 useless extension candidates. Maximal degree in co-relation 45759. Up to 6483 conditions per place. [2024-05-12 10:45:36,044 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 451 selfloop transitions, 116 changer transitions 0/581 dead transitions. [2024-05-12 10:45:36,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 581 transitions, 9876 flow [2024-05-12 10:45:36,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:45:36,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:45:36,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 274 transitions. [2024-05-12 10:45:36,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299806576402321 [2024-05-12 10:45:36,045 INFO L175 Difference]: Start difference. First operand has 426 places, 549 transitions, 8124 flow. Second operand 11 states and 274 transitions. [2024-05-12 10:45:36,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 581 transitions, 9876 flow [2024-05-12 10:45:38,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 581 transitions, 9600 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-05-12 10:45:38,418 INFO L231 Difference]: Finished difference. Result has 435 places, 558 transitions, 8309 flow [2024-05-12 10:45:38,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7848, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8309, PETRI_PLACES=435, PETRI_TRANSITIONS=558} [2024-05-12 10:45:38,419 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 384 predicate places. [2024-05-12 10:45:38,419 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 558 transitions, 8309 flow [2024-05-12 10:45:38,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:38,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:38,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:38,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-05-12 10:45:38,419 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:38,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:38,419 INFO L85 PathProgramCache]: Analyzing trace with hash -251493028, now seen corresponding path program 12 times [2024-05-12 10:45:38,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:38,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077188271] [2024-05-12 10:45:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:38,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:38,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:38,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:38,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077188271] [2024-05-12 10:45:38,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077188271] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:38,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:38,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:45:38,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516716373] [2024-05-12 10:45:38,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:38,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:45:38,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:38,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:45:38,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:45:38,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:45:38,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 558 transitions, 8309 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:38,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:38,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:45:38,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:40,225 INFO L124 PetriNetUnfolderBase]: 4421/7489 cut-off events. [2024-05-12 10:45:40,225 INFO L125 PetriNetUnfolderBase]: For 401844/401890 co-relation queries the response was YES. [2024-05-12 10:45:40,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45842 conditions, 7489 events. 4421/7489 cut-off events. For 401844/401890 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 53963 event pairs, 1312 based on Foata normal form. 13/7122 useless extension candidates. Maximal degree in co-relation 45668. Up to 6371 conditions per place. [2024-05-12 10:45:40,344 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 402 selfloop transitions, 162 changer transitions 0/578 dead transitions. [2024-05-12 10:45:40,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 578 transitions, 9877 flow [2024-05-12 10:45:40,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:45:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:45:40,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-05-12 10:45:40,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2024-05-12 10:45:40,345 INFO L175 Difference]: Start difference. First operand has 435 places, 558 transitions, 8309 flow. Second operand 8 states and 214 transitions. [2024-05-12 10:45:40,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 578 transitions, 9877 flow [2024-05-12 10:45:42,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 578 transitions, 9503 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-05-12 10:45:42,500 INFO L231 Difference]: Finished difference. Result has 435 places, 558 transitions, 8265 flow [2024-05-12 10:45:42,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7935, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8265, PETRI_PLACES=435, PETRI_TRANSITIONS=558} [2024-05-12 10:45:42,500 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 384 predicate places. [2024-05-12 10:45:42,500 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 558 transitions, 8265 flow [2024-05-12 10:45:42,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:42,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:42,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:42,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-05-12 10:45:42,501 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:42,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:42,501 INFO L85 PathProgramCache]: Analyzing trace with hash -202350096, now seen corresponding path program 12 times [2024-05-12 10:45:42,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:42,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517488376] [2024-05-12 10:45:42,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:42,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:42,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:42,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:42,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517488376] [2024-05-12 10:45:42,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517488376] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:42,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:42,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:45:42,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265780823] [2024-05-12 10:45:42,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:42,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:45:42,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:42,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:45:42,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:45:42,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:45:42,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 558 transitions, 8265 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:42,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:42,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:45:42,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:44,330 INFO L124 PetriNetUnfolderBase]: 4418/7485 cut-off events. [2024-05-12 10:45:44,331 INFO L125 PetriNetUnfolderBase]: For 403660/403706 co-relation queries the response was YES. [2024-05-12 10:45:44,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45719 conditions, 7485 events. 4418/7485 cut-off events. For 403660/403706 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 53922 event pairs, 1308 based on Foata normal form. 13/7118 useless extension candidates. Maximal degree in co-relation 45546. Up to 6476 conditions per place. [2024-05-12 10:45:44,455 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 449 selfloop transitions, 115 changer transitions 0/578 dead transitions. [2024-05-12 10:45:44,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 578 transitions, 9639 flow [2024-05-12 10:45:44,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:45:44,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:45:44,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-05-12 10:45:44,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-05-12 10:45:44,456 INFO L175 Difference]: Start difference. First operand has 435 places, 558 transitions, 8265 flow. Second operand 9 states and 231 transitions. [2024-05-12 10:45:44,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 578 transitions, 9639 flow [2024-05-12 10:45:46,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 578 transitions, 9289 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-05-12 10:45:46,752 INFO L231 Difference]: Finished difference. Result has 437 places, 558 transitions, 8151 flow [2024-05-12 10:45:46,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7915, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8151, PETRI_PLACES=437, PETRI_TRANSITIONS=558} [2024-05-12 10:45:46,752 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 386 predicate places. [2024-05-12 10:45:46,752 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 558 transitions, 8151 flow [2024-05-12 10:45:46,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:46,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:46,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:46,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-05-12 10:45:46,753 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:46,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:46,753 INFO L85 PathProgramCache]: Analyzing trace with hash 791118174, now seen corresponding path program 1 times [2024-05-12 10:45:46,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:46,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452063705] [2024-05-12 10:45:46,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:46,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:47,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:47,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452063705] [2024-05-12 10:45:47,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452063705] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:47,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:47,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:45:47,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190018107] [2024-05-12 10:45:47,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:47,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:45:47,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:47,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:45:47,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:45:47,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:45:47,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 558 transitions, 8151 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:47,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:47,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:45:47,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:48,835 INFO L124 PetriNetUnfolderBase]: 4651/7919 cut-off events. [2024-05-12 10:45:48,835 INFO L125 PetriNetUnfolderBase]: For 436552/436582 co-relation queries the response was YES. [2024-05-12 10:45:48,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47507 conditions, 7919 events. 4651/7919 cut-off events. For 436552/436582 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 57797 event pairs, 1239 based on Foata normal form. 6/7530 useless extension candidates. Maximal degree in co-relation 47333. Up to 6491 conditions per place. [2024-05-12 10:45:48,940 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 536 selfloop transitions, 56 changer transitions 0/606 dead transitions. [2024-05-12 10:45:48,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 606 transitions, 9754 flow [2024-05-12 10:45:48,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:45:48,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:45:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 226 transitions. [2024-05-12 10:45:48,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.601063829787234 [2024-05-12 10:45:48,941 INFO L175 Difference]: Start difference. First operand has 437 places, 558 transitions, 8151 flow. Second operand 8 states and 226 transitions. [2024-05-12 10:45:48,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 606 transitions, 9754 flow [2024-05-12 10:45:50,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 606 transitions, 9524 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-05-12 10:45:50,859 INFO L231 Difference]: Finished difference. Result has 439 places, 564 transitions, 8140 flow [2024-05-12 10:45:50,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7921, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8140, PETRI_PLACES=439, PETRI_TRANSITIONS=564} [2024-05-12 10:45:50,860 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 388 predicate places. [2024-05-12 10:45:50,860 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 564 transitions, 8140 flow [2024-05-12 10:45:50,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:50,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:50,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:50,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-05-12 10:45:50,861 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:50,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:50,861 INFO L85 PathProgramCache]: Analyzing trace with hash 847849162, now seen corresponding path program 2 times [2024-05-12 10:45:50,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:50,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130979406] [2024-05-12 10:45:50,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:50,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:51,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:51,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:51,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130979406] [2024-05-12 10:45:51,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130979406] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:51,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:51,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:45:51,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695293492] [2024-05-12 10:45:51,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:51,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:45:51,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:51,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:45:51,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:45:51,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:45:51,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 564 transitions, 8140 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:51,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:51,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:45:51,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:52,842 INFO L124 PetriNetUnfolderBase]: 4799/8136 cut-off events. [2024-05-12 10:45:52,843 INFO L125 PetriNetUnfolderBase]: For 448405/448438 co-relation queries the response was YES. [2024-05-12 10:45:52,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49368 conditions, 8136 events. 4799/8136 cut-off events. For 448405/448438 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 59512 event pairs, 1430 based on Foata normal form. 6/7739 useless extension candidates. Maximal degree in co-relation 49191. Up to 7032 conditions per place. [2024-05-12 10:45:52,973 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 538 selfloop transitions, 51 changer transitions 0/603 dead transitions. [2024-05-12 10:45:52,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 603 transitions, 9504 flow [2024-05-12 10:45:52,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:45:52,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:45:52,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2024-05-12 10:45:52,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851063829787234 [2024-05-12 10:45:52,974 INFO L175 Difference]: Start difference. First operand has 439 places, 564 transitions, 8140 flow. Second operand 8 states and 220 transitions. [2024-05-12 10:45:52,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 603 transitions, 9504 flow [2024-05-12 10:45:55,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 603 transitions, 9403 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-05-12 10:45:55,317 INFO L231 Difference]: Finished difference. Result has 444 places, 568 transitions, 8217 flow [2024-05-12 10:45:55,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8042, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8217, PETRI_PLACES=444, PETRI_TRANSITIONS=568} [2024-05-12 10:45:55,317 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 393 predicate places. [2024-05-12 10:45:55,317 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 568 transitions, 8217 flow [2024-05-12 10:45:55,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:55,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:55,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:55,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-05-12 10:45:55,318 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:55,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:55,318 INFO L85 PathProgramCache]: Analyzing trace with hash -350259156, now seen corresponding path program 3 times [2024-05-12 10:45:55,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:55,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726578541] [2024-05-12 10:45:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:55,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:55,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:55,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:55,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726578541] [2024-05-12 10:45:55,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726578541] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:55,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:55,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:45:55,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778216779] [2024-05-12 10:45:55,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:55,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:45:55,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:55,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:45:55,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:45:55,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:45:55,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 568 transitions, 8217 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:55,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:55,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:45:55,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:57,367 INFO L124 PetriNetUnfolderBase]: 4873/8277 cut-off events. [2024-05-12 10:45:57,368 INFO L125 PetriNetUnfolderBase]: For 458598/458631 co-relation queries the response was YES. [2024-05-12 10:45:57,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49898 conditions, 8277 events. 4873/8277 cut-off events. For 458598/458631 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 60750 event pairs, 1467 based on Foata normal form. 6/7873 useless extension candidates. Maximal degree in co-relation 49720. Up to 7140 conditions per place. [2024-05-12 10:45:57,514 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 538 selfloop transitions, 48 changer transitions 0/600 dead transitions. [2024-05-12 10:45:57,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 600 transitions, 9548 flow [2024-05-12 10:45:57,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:45:57,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:45:57,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-05-12 10:45:57,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5718085106382979 [2024-05-12 10:45:57,515 INFO L175 Difference]: Start difference. First operand has 444 places, 568 transitions, 8217 flow. Second operand 8 states and 215 transitions. [2024-05-12 10:45:57,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 600 transitions, 9548 flow [2024-05-12 10:45:59,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 600 transitions, 9438 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-05-12 10:45:59,979 INFO L231 Difference]: Finished difference. Result has 448 places, 571 transitions, 8268 flow [2024-05-12 10:45:59,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8107, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8268, PETRI_PLACES=448, PETRI_TRANSITIONS=571} [2024-05-12 10:45:59,980 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 397 predicate places. [2024-05-12 10:45:59,980 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 571 transitions, 8268 flow [2024-05-12 10:45:59,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:59,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:59,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:59,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-05-12 10:45:59,981 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:59,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:59,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1205489152, now seen corresponding path program 1 times [2024-05-12 10:45:59,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:59,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730646084] [2024-05-12 10:45:59,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:59,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:00,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:00,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730646084] [2024-05-12 10:46:00,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730646084] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:00,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:00,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:46:00,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819401753] [2024-05-12 10:46:00,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:00,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:46:00,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:00,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:46:00,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:46:00,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:46:00,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 571 transitions, 8268 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:00,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:00,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:46:00,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:02,091 INFO L124 PetriNetUnfolderBase]: 4920/8384 cut-off events. [2024-05-12 10:46:02,091 INFO L125 PetriNetUnfolderBase]: For 459149/459216 co-relation queries the response was YES. [2024-05-12 10:46:02,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50713 conditions, 8384 events. 4920/8384 cut-off events. For 459149/459216 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 61822 event pairs, 1482 based on Foata normal form. 19/7989 useless extension candidates. Maximal degree in co-relation 50533. Up to 7220 conditions per place. [2024-05-12 10:46:02,233 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 501 selfloop transitions, 94 changer transitions 0/609 dead transitions. [2024-05-12 10:46:02,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 609 transitions, 9834 flow [2024-05-12 10:46:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:46:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:46:02,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-05-12 10:46:02,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5904255319148937 [2024-05-12 10:46:02,234 INFO L175 Difference]: Start difference. First operand has 448 places, 571 transitions, 8268 flow. Second operand 8 states and 222 transitions. [2024-05-12 10:46:02,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 609 transitions, 9834 flow [2024-05-12 10:46:04,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 609 transitions, 9736 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-05-12 10:46:04,619 INFO L231 Difference]: Finished difference. Result has 452 places, 575 transitions, 8447 flow [2024-05-12 10:46:04,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8170, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8447, PETRI_PLACES=452, PETRI_TRANSITIONS=575} [2024-05-12 10:46:04,619 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 401 predicate places. [2024-05-12 10:46:04,620 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 575 transitions, 8447 flow [2024-05-12 10:46:04,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:04,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:04,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:04,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-05-12 10:46:04,620 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:46:04,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:04,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1257667790, now seen corresponding path program 2 times [2024-05-12 10:46:04,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:04,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020488225] [2024-05-12 10:46:04,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:04,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:05,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:05,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:05,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020488225] [2024-05-12 10:46:05,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020488225] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:05,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:05,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:46:05,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360178018] [2024-05-12 10:46:05,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:05,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:46:05,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:05,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:46:05,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:46:05,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:46:05,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 575 transitions, 8447 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:05,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:05,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:46:05,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:06,898 INFO L124 PetriNetUnfolderBase]: 4941/8381 cut-off events. [2024-05-12 10:46:06,899 INFO L125 PetriNetUnfolderBase]: For 467047/467114 co-relation queries the response was YES. [2024-05-12 10:46:06,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51089 conditions, 8381 events. 4941/8381 cut-off events. For 467047/467114 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 61656 event pairs, 1510 based on Foata normal form. 19/7983 useless extension candidates. Maximal degree in co-relation 50908. Up to 7310 conditions per place. [2024-05-12 10:46:07,013 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 499 selfloop transitions, 91 changer transitions 0/604 dead transitions. [2024-05-12 10:46:07,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 604 transitions, 9741 flow [2024-05-12 10:46:07,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:46:07,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:46:07,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-05-12 10:46:07,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5718085106382979 [2024-05-12 10:46:07,014 INFO L175 Difference]: Start difference. First operand has 452 places, 575 transitions, 8447 flow. Second operand 8 states and 215 transitions. [2024-05-12 10:46:07,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 604 transitions, 9741 flow [2024-05-12 10:46:09,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 604 transitions, 9557 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-05-12 10:46:09,319 INFO L231 Difference]: Finished difference. Result has 456 places, 577 transitions, 8498 flow [2024-05-12 10:46:09,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8285, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8498, PETRI_PLACES=456, PETRI_TRANSITIONS=577} [2024-05-12 10:46:09,320 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 405 predicate places. [2024-05-12 10:46:09,320 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 577 transitions, 8498 flow [2024-05-12 10:46:09,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:09,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:09,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:09,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-05-12 10:46:09,320 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:46:09,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:09,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1323637282, now seen corresponding path program 3 times [2024-05-12 10:46:09,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:09,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156996496] [2024-05-12 10:46:09,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:09,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:09,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:09,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:09,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156996496] [2024-05-12 10:46:09,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156996496] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:09,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:09,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:46:09,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824035544] [2024-05-12 10:46:09,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:09,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:46:09,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:09,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:46:09,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:46:09,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:46:09,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 577 transitions, 8498 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:09,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:09,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:46:09,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:11,456 INFO L124 PetriNetUnfolderBase]: 4962/8416 cut-off events. [2024-05-12 10:46:11,456 INFO L125 PetriNetUnfolderBase]: For 473706/473758 co-relation queries the response was YES. [2024-05-12 10:46:11,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51181 conditions, 8416 events. 4962/8416 cut-off events. For 473706/473758 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 61971 event pairs, 1505 based on Foata normal form. 14/8010 useless extension candidates. Maximal degree in co-relation 50998. Up to 7419 conditions per place. [2024-05-12 10:46:11,594 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 541 selfloop transitions, 48 changer transitions 0/603 dead transitions. [2024-05-12 10:46:11,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 603 transitions, 9764 flow [2024-05-12 10:46:11,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:46:11,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:46:11,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-05-12 10:46:11,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5558510638297872 [2024-05-12 10:46:11,595 INFO L175 Difference]: Start difference. First operand has 456 places, 577 transitions, 8498 flow. Second operand 8 states and 209 transitions. [2024-05-12 10:46:11,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 603 transitions, 9764 flow [2024-05-12 10:46:14,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 603 transitions, 9571 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-05-12 10:46:14,186 INFO L231 Difference]: Finished difference. Result has 458 places, 579 transitions, 8436 flow [2024-05-12 10:46:14,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8305, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8436, PETRI_PLACES=458, PETRI_TRANSITIONS=579} [2024-05-12 10:46:14,186 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 407 predicate places. [2024-05-12 10:46:14,186 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 579 transitions, 8436 flow [2024-05-12 10:46:14,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:14,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:14,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:14,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-05-12 10:46:14,192 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:46:14,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:14,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1323821980, now seen corresponding path program 1 times [2024-05-12 10:46:14,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:14,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433083112] [2024-05-12 10:46:14,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:14,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:14,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:14,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433083112] [2024-05-12 10:46:14,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433083112] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:14,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:14,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:46:14,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807752161] [2024-05-12 10:46:14,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:14,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:46:14,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:14,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:46:14,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:46:14,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:46:14,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 579 transitions, 8436 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:14,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:14,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:46:14,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:16,282 INFO L124 PetriNetUnfolderBase]: 4983/8452 cut-off events. [2024-05-12 10:46:16,282 INFO L125 PetriNetUnfolderBase]: For 482266/482318 co-relation queries the response was YES. [2024-05-12 10:46:16,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51391 conditions, 8452 events. 4983/8452 cut-off events. For 482266/482318 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 62299 event pairs, 1511 based on Foata normal form. 14/8044 useless extension candidates. Maximal degree in co-relation 51207. Up to 7396 conditions per place. [2024-05-12 10:46:16,426 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 500 selfloop transitions, 91 changer transitions 0/605 dead transitions. [2024-05-12 10:46:16,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 605 transitions, 9726 flow [2024-05-12 10:46:16,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:46:16,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:46:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-05-12 10:46:16,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-05-12 10:46:16,427 INFO L175 Difference]: Start difference. First operand has 458 places, 579 transitions, 8436 flow. Second operand 8 states and 212 transitions. [2024-05-12 10:46:16,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 605 transitions, 9726 flow [2024-05-12 10:46:19,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 605 transitions, 9627 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-05-12 10:46:19,470 INFO L231 Difference]: Finished difference. Result has 461 places, 581 transitions, 8574 flow [2024-05-12 10:46:19,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8337, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8574, PETRI_PLACES=461, PETRI_TRANSITIONS=581} [2024-05-12 10:46:19,471 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 410 predicate places. [2024-05-12 10:46:19,471 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 581 transitions, 8574 flow [2024-05-12 10:46:19,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:19,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:19,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:19,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-05-12 10:46:19,472 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:46:19,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:19,472 INFO L85 PathProgramCache]: Analyzing trace with hash -251663838, now seen corresponding path program 4 times [2024-05-12 10:46:19,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:19,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373652322] [2024-05-12 10:46:19,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:19,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:19,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:19,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373652322] [2024-05-12 10:46:19,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373652322] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:19,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:19,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:46:19,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722794049] [2024-05-12 10:46:19,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:19,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:46:19,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:19,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:46:19,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:46:19,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:46:19,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 581 transitions, 8574 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:19,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:19,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:46:19,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:21,629 INFO L124 PetriNetUnfolderBase]: 5004/8488 cut-off events. [2024-05-12 10:46:21,630 INFO L125 PetriNetUnfolderBase]: For 492235/492287 co-relation queries the response was YES. [2024-05-12 10:46:21,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51884 conditions, 8488 events. 5004/8488 cut-off events. For 492235/492287 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 62536 event pairs, 1509 based on Foata normal form. 14/8078 useless extension candidates. Maximal degree in co-relation 51699. Up to 7475 conditions per place. [2024-05-12 10:46:21,777 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 537 selfloop transitions, 54 changer transitions 0/605 dead transitions. [2024-05-12 10:46:21,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 605 transitions, 9842 flow [2024-05-12 10:46:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:46:21,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:46:21,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-05-12 10:46:21,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2024-05-12 10:46:21,778 INFO L175 Difference]: Start difference. First operand has 461 places, 581 transitions, 8574 flow. Second operand 9 states and 227 transitions. [2024-05-12 10:46:21,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 605 transitions, 9842 flow [2024-05-12 10:46:24,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 605 transitions, 9621 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-05-12 10:46:24,673 INFO L231 Difference]: Finished difference. Result has 464 places, 583 transitions, 8500 flow [2024-05-12 10:46:24,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8353, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8500, PETRI_PLACES=464, PETRI_TRANSITIONS=583} [2024-05-12 10:46:24,674 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 413 predicate places. [2024-05-12 10:46:24,674 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 583 transitions, 8500 flow [2024-05-12 10:46:24,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:24,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:24,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:24,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-05-12 10:46:24,674 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:46:24,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:24,674 INFO L85 PathProgramCache]: Analyzing trace with hash -251479140, now seen corresponding path program 2 times [2024-05-12 10:46:24,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:24,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190637902] [2024-05-12 10:46:24,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:24,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:25,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:25,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:25,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190637902] [2024-05-12 10:46:25,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190637902] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:25,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:25,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:46:25,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837484913] [2024-05-12 10:46:25,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:25,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:46:25,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:25,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:46:25,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:46:25,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:46:25,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 583 transitions, 8500 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:25,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:25,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:46:25,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:27,009 INFO L124 PetriNetUnfolderBase]: 5025/8524 cut-off events. [2024-05-12 10:46:27,009 INFO L125 PetriNetUnfolderBase]: For 499981/500033 co-relation queries the response was YES. [2024-05-12 10:46:27,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52003 conditions, 8524 events. 5025/8524 cut-off events. For 499981/500033 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 62875 event pairs, 1515 based on Foata normal form. 14/8112 useless extension candidates. Maximal degree in co-relation 51817. Up to 7458 conditions per place. [2024-05-12 10:46:27,142 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 503 selfloop transitions, 89 changer transitions 0/606 dead transitions. [2024-05-12 10:46:27,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 606 transitions, 9788 flow [2024-05-12 10:46:27,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:46:27,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:46:27,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-05-12 10:46:27,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2024-05-12 10:46:27,143 INFO L175 Difference]: Start difference. First operand has 464 places, 583 transitions, 8500 flow. Second operand 8 states and 210 transitions. [2024-05-12 10:46:27,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 606 transitions, 9788 flow [2024-05-12 10:46:29,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 606 transitions, 9685 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-05-12 10:46:29,512 INFO L231 Difference]: Finished difference. Result has 466 places, 585 transitions, 8634 flow [2024-05-12 10:46:29,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8397, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8634, PETRI_PLACES=466, PETRI_TRANSITIONS=585} [2024-05-12 10:46:29,512 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 415 predicate places. [2024-05-12 10:46:29,513 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 585 transitions, 8634 flow [2024-05-12 10:46:29,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:29,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:29,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:29,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-05-12 10:46:29,513 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:46:29,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:29,513 INFO L85 PathProgramCache]: Analyzing trace with hash -23577990, now seen corresponding path program 3 times [2024-05-12 10:46:29,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:29,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14719116] [2024-05-12 10:46:29,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:29,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:29,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:29,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:29,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14719116] [2024-05-12 10:46:29,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14719116] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:29,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:29,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:46:29,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622163447] [2024-05-12 10:46:29,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:29,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:46:29,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:29,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:46:29,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:46:29,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:46:29,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 585 transitions, 8634 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:29,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:29,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:46:29,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:31,738 INFO L124 PetriNetUnfolderBase]: 5046/8555 cut-off events. [2024-05-12 10:46:31,738 INFO L125 PetriNetUnfolderBase]: For 511270/511322 co-relation queries the response was YES. [2024-05-12 10:46:31,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52582 conditions, 8555 events. 5046/8555 cut-off events. For 511270/511322 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 63045 event pairs, 1524 based on Foata normal form. 14/8141 useless extension candidates. Maximal degree in co-relation 52395. Up to 7489 conditions per place. [2024-05-12 10:46:31,893 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 503 selfloop transitions, 91 changer transitions 0/608 dead transitions. [2024-05-12 10:46:31,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 608 transitions, 9930 flow [2024-05-12 10:46:31,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:46:31,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:46:31,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-05-12 10:46:31,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5558510638297872 [2024-05-12 10:46:31,894 INFO L175 Difference]: Start difference. First operand has 466 places, 585 transitions, 8634 flow. Second operand 8 states and 209 transitions. [2024-05-12 10:46:31,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 608 transitions, 9930 flow [2024-05-12 10:46:35,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 608 transitions, 9701 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-05-12 10:46:35,199 INFO L231 Difference]: Finished difference. Result has 468 places, 587 transitions, 8650 flow [2024-05-12 10:46:35,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8405, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8650, PETRI_PLACES=468, PETRI_TRANSITIONS=587} [2024-05-12 10:46:35,200 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 417 predicate places. [2024-05-12 10:46:35,200 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 587 transitions, 8650 flow [2024-05-12 10:46:35,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:35,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:35,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:35,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-05-12 10:46:35,200 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:46:35,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:35,201 INFO L85 PathProgramCache]: Analyzing trace with hash -15007110, now seen corresponding path program 4 times [2024-05-12 10:46:35,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:35,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319536618] [2024-05-12 10:46:35,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:35,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:35,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:35,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319536618] [2024-05-12 10:46:35,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319536618] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:35,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:35,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:46:35,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854036684] [2024-05-12 10:46:35,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:35,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:46:35,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:35,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:46:35,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:46:35,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:46:35,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 587 transitions, 8650 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:35,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:35,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:46:35,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:37,446 INFO L124 PetriNetUnfolderBase]: 5093/8659 cut-off events. [2024-05-12 10:46:37,446 INFO L125 PetriNetUnfolderBase]: For 535873/535925 co-relation queries the response was YES. [2024-05-12 10:46:37,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53614 conditions, 8659 events. 5093/8659 cut-off events. For 535873/535925 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 64091 event pairs, 1513 based on Foata normal form. 14/8245 useless extension candidates. Maximal degree in co-relation 53426. Up to 7478 conditions per place. [2024-05-12 10:46:37,610 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 504 selfloop transitions, 99 changer transitions 0/617 dead transitions. [2024-05-12 10:46:37,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 617 transitions, 10272 flow [2024-05-12 10:46:37,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:46:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:46:37,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-05-12 10:46:37,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5664893617021277 [2024-05-12 10:46:37,611 INFO L175 Difference]: Start difference. First operand has 468 places, 587 transitions, 8650 flow. Second operand 8 states and 213 transitions. [2024-05-12 10:46:37,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 617 transitions, 10272 flow [2024-05-12 10:46:40,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 617 transitions, 10059 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-05-12 10:46:40,300 INFO L231 Difference]: Finished difference. Result has 472 places, 592 transitions, 8790 flow [2024-05-12 10:46:40,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8437, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8790, PETRI_PLACES=472, PETRI_TRANSITIONS=592} [2024-05-12 10:46:40,301 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 421 predicate places. [2024-05-12 10:46:40,301 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 592 transitions, 8790 flow [2024-05-12 10:46:40,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:40,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:40,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:40,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-05-12 10:46:40,301 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:46:40,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:40,301 INFO L85 PathProgramCache]: Analyzing trace with hash -448655970, now seen corresponding path program 13 times [2024-05-12 10:46:40,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:40,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994859153] [2024-05-12 10:46:40,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:40,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:40,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:40,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994859153] [2024-05-12 10:46:40,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994859153] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:40,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:40,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:46:40,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293974996] [2024-05-12 10:46:40,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:40,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:46:40,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:40,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:46:40,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:46:40,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:46:40,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 592 transitions, 8790 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:40,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:40,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:46:40,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:42,493 INFO L124 PetriNetUnfolderBase]: 5110/8651 cut-off events. [2024-05-12 10:46:42,493 INFO L125 PetriNetUnfolderBase]: For 547994/548042 co-relation queries the response was YES. [2024-05-12 10:46:42,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54212 conditions, 8651 events. 5110/8651 cut-off events. For 547994/548042 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 63822 event pairs, 1538 based on Foata normal form. 13/8226 useless extension candidates. Maximal degree in co-relation 54022. Up to 7350 conditions per place. [2024-05-12 10:46:42,648 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 422 selfloop transitions, 188 changer transitions 0/624 dead transitions. [2024-05-12 10:46:42,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 624 transitions, 10666 flow [2024-05-12 10:46:42,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:46:42,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:46:42,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-05-12 10:46:42,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797872340425532 [2024-05-12 10:46:42,648 INFO L175 Difference]: Start difference. First operand has 472 places, 592 transitions, 8790 flow. Second operand 8 states and 218 transitions. [2024-05-12 10:46:42,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 624 transitions, 10666 flow [2024-05-12 10:46:45,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 624 transitions, 10478 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-05-12 10:46:45,642 INFO L231 Difference]: Finished difference. Result has 476 places, 598 transitions, 9132 flow [2024-05-12 10:46:45,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8602, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9132, PETRI_PLACES=476, PETRI_TRANSITIONS=598} [2024-05-12 10:46:45,642 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 425 predicate places. [2024-05-12 10:46:45,642 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 598 transitions, 9132 flow [2024-05-12 10:46:45,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:45,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:45,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:45,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-05-12 10:46:45,643 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:46:45,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:45,643 INFO L85 PathProgramCache]: Analyzing trace with hash -722648248, now seen corresponding path program 14 times [2024-05-12 10:46:45,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:45,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445413452] [2024-05-12 10:46:45,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:45,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:46,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:46,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:46,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445413452] [2024-05-12 10:46:46,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445413452] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:46,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:46,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:46:46,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822288481] [2024-05-12 10:46:46,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:46,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:46:46,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:46,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:46:46,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:46:46,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:46:46,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 598 transitions, 9132 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:46,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:46,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:46:46,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:47,775 INFO L124 PetriNetUnfolderBase]: 5137/8690 cut-off events. [2024-05-12 10:46:47,775 INFO L125 PetriNetUnfolderBase]: For 567721/567769 co-relation queries the response was YES. [2024-05-12 10:46:47,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54950 conditions, 8690 events. 5137/8690 cut-off events. For 567721/567769 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 64156 event pairs, 1538 based on Foata normal form. 13/8259 useless extension candidates. Maximal degree in co-relation 54758. Up to 7380 conditions per place. [2024-05-12 10:46:47,912 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 438 selfloop transitions, 183 changer transitions 0/635 dead transitions. [2024-05-12 10:46:47,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 635 transitions, 11560 flow [2024-05-12 10:46:47,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:46:47,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:46:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-05-12 10:46:47,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5904255319148937 [2024-05-12 10:46:47,913 INFO L175 Difference]: Start difference. First operand has 476 places, 598 transitions, 9132 flow. Second operand 8 states and 222 transitions. [2024-05-12 10:46:47,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 635 transitions, 11560 flow [2024-05-12 10:46:50,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 635 transitions, 11182 flow, removed 61 selfloop flow, removed 4 redundant places. [2024-05-12 10:46:50,755 INFO L231 Difference]: Finished difference. Result has 480 places, 607 transitions, 9348 flow [2024-05-12 10:46:50,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8787, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9348, PETRI_PLACES=480, PETRI_TRANSITIONS=607} [2024-05-12 10:46:50,756 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 429 predicate places. [2024-05-12 10:46:50,756 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 607 transitions, 9348 flow [2024-05-12 10:46:50,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:50,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:50,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:50,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-05-12 10:46:50,756 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:46:50,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:50,756 INFO L85 PathProgramCache]: Analyzing trace with hash 199173412, now seen corresponding path program 15 times [2024-05-12 10:46:50,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:50,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877540363] [2024-05-12 10:46:50,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:50,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:51,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:51,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:51,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877540363] [2024-05-12 10:46:51,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877540363] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:51,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:51,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:46:51,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438713719] [2024-05-12 10:46:51,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:51,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:46:51,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:51,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:46:51,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:46:51,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:46:51,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 607 transitions, 9348 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:51,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:51,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:46:51,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:53,058 INFO L124 PetriNetUnfolderBase]: 5154/8716 cut-off events. [2024-05-12 10:46:53,058 INFO L125 PetriNetUnfolderBase]: For 583632/583680 co-relation queries the response was YES. [2024-05-12 10:46:53,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55254 conditions, 8716 events. 5154/8716 cut-off events. For 583632/583680 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 64355 event pairs, 1538 based on Foata normal form. 13/8281 useless extension candidates. Maximal degree in co-relation 55061. Up to 7399 conditions per place. [2024-05-12 10:46:53,201 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 437 selfloop transitions, 187 changer transitions 0/638 dead transitions. [2024-05-12 10:46:53,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 638 transitions, 11702 flow [2024-05-12 10:46:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:46:53,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:46:53,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-05-12 10:46:53,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5824468085106383 [2024-05-12 10:46:53,202 INFO L175 Difference]: Start difference. First operand has 480 places, 607 transitions, 9348 flow. Second operand 8 states and 219 transitions. [2024-05-12 10:46:53,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 638 transitions, 11702 flow [2024-05-12 10:46:56,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 638 transitions, 11058 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-05-12 10:46:56,317 INFO L231 Difference]: Finished difference. Result has 482 places, 613 transitions, 9226 flow [2024-05-12 10:46:56,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8742, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9226, PETRI_PLACES=482, PETRI_TRANSITIONS=613} [2024-05-12 10:46:56,318 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 431 predicate places. [2024-05-12 10:46:56,318 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 613 transitions, 9226 flow [2024-05-12 10:46:56,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:56,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:56,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:56,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-05-12 10:46:56,319 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:46:56,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:56,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1863856216, now seen corresponding path program 16 times [2024-05-12 10:46:56,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:56,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683004338] [2024-05-12 10:46:56,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:56,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:56,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:56,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:56,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683004338] [2024-05-12 10:46:56,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683004338] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:56,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:56,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:46:56,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66872036] [2024-05-12 10:46:56,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:56,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:46:56,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:56,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:46:56,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:46:56,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:46:56,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 613 transitions, 9226 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:56,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:56,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:46:56,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:58,756 INFO L124 PetriNetUnfolderBase]: 5161/8727 cut-off events. [2024-05-12 10:46:58,768 INFO L125 PetriNetUnfolderBase]: For 588232/588280 co-relation queries the response was YES. [2024-05-12 10:46:58,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55126 conditions, 8727 events. 5161/8727 cut-off events. For 588232/588280 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 64393 event pairs, 1538 based on Foata normal form. 13/8290 useless extension candidates. Maximal degree in co-relation 54932. Up to 7407 conditions per place. [2024-05-12 10:46:58,902 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 422 selfloop transitions, 203 changer transitions 0/639 dead transitions. [2024-05-12 10:46:58,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 639 transitions, 11036 flow [2024-05-12 10:46:58,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:46:58,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:46:58,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-05-12 10:46:58,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-05-12 10:46:58,903 INFO L175 Difference]: Start difference. First operand has 482 places, 613 transitions, 9226 flow. Second operand 8 states and 216 transitions. [2024-05-12 10:46:58,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 639 transitions, 11036 flow [2024-05-12 10:47:01,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 639 transitions, 10665 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-05-12 10:47:01,432 INFO L231 Difference]: Finished difference. Result has 486 places, 616 transitions, 9315 flow [2024-05-12 10:47:01,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8861, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9315, PETRI_PLACES=486, PETRI_TRANSITIONS=616} [2024-05-12 10:47:01,433 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 435 predicate places. [2024-05-12 10:47:01,433 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 616 transitions, 9315 flow [2024-05-12 10:47:01,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:01,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:01,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:01,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-05-12 10:47:01,433 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:47:01,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:01,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1376641950, now seen corresponding path program 17 times [2024-05-12 10:47:01,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:01,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477241425] [2024-05-12 10:47:01,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:01,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:01,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:01,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477241425] [2024-05-12 10:47:01,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477241425] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:01,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:01,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:47:01,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326111782] [2024-05-12 10:47:01,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:01,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:47:01,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:01,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:47:01,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:47:01,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:47:01,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 616 transitions, 9315 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:01,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:01,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:47:01,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:03,589 INFO L124 PetriNetUnfolderBase]: 5158/8718 cut-off events. [2024-05-12 10:47:03,589 INFO L125 PetriNetUnfolderBase]: For 590803/590854 co-relation queries the response was YES. [2024-05-12 10:47:03,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55067 conditions, 8718 events. 5158/8718 cut-off events. For 590803/590854 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 64365 event pairs, 1531 based on Foata normal form. 13/8280 useless extension candidates. Maximal degree in co-relation 54872. Up to 7404 conditions per place. [2024-05-12 10:47:03,744 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 432 selfloop transitions, 197 changer transitions 0/643 dead transitions. [2024-05-12 10:47:03,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 643 transitions, 11329 flow [2024-05-12 10:47:03,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:47:03,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:47:03,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2024-05-12 10:47:03,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851063829787234 [2024-05-12 10:47:03,745 INFO L175 Difference]: Start difference. First operand has 486 places, 616 transitions, 9315 flow. Second operand 8 states and 220 transitions. [2024-05-12 10:47:03,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 643 transitions, 11329 flow [2024-05-12 10:47:06,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 643 transitions, 10905 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-05-12 10:47:06,990 INFO L231 Difference]: Finished difference. Result has 489 places, 616 transitions, 9291 flow [2024-05-12 10:47:06,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8891, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9291, PETRI_PLACES=489, PETRI_TRANSITIONS=616} [2024-05-12 10:47:06,991 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 438 predicate places. [2024-05-12 10:47:06,991 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 616 transitions, 9291 flow [2024-05-12 10:47:06,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:06,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:06,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:06,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-05-12 10:47:06,991 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:47:06,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:06,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1376521794, now seen corresponding path program 13 times [2024-05-12 10:47:06,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:06,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951922346] [2024-05-12 10:47:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:06,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:07,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:07,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951922346] [2024-05-12 10:47:07,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951922346] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:07,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:07,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:47:07,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246489883] [2024-05-12 10:47:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:07,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:47:07,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:07,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:47:07,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:47:07,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:47:07,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 616 transitions, 9291 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:07,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:07,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:47:07,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:09,206 INFO L124 PetriNetUnfolderBase]: 5171/8739 cut-off events. [2024-05-12 10:47:09,206 INFO L125 PetriNetUnfolderBase]: For 600132/600183 co-relation queries the response was YES. [2024-05-12 10:47:09,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55254 conditions, 8739 events. 5171/8739 cut-off events. For 600132/600183 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 64503 event pairs, 1540 based on Foata normal form. 10/8295 useless extension candidates. Maximal degree in co-relation 55058. Up to 7493 conditions per place. [2024-05-12 10:47:09,349 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 456 selfloop transitions, 175 changer transitions 0/645 dead transitions. [2024-05-12 10:47:09,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 645 transitions, 11180 flow [2024-05-12 10:47:09,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:47:09,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:47:09,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-05-12 10:47:09,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-05-12 10:47:09,350 INFO L175 Difference]: Start difference. First operand has 489 places, 616 transitions, 9291 flow. Second operand 8 states and 216 transitions. [2024-05-12 10:47:09,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 645 transitions, 11180 flow [2024-05-12 10:47:12,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 645 transitions, 10732 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-05-12 10:47:12,382 INFO L231 Difference]: Finished difference. Result has 491 places, 622 transitions, 9312 flow [2024-05-12 10:47:12,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8849, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9312, PETRI_PLACES=491, PETRI_TRANSITIONS=622} [2024-05-12 10:47:12,383 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 440 predicate places. [2024-05-12 10:47:12,383 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 622 transitions, 9312 flow [2024-05-12 10:47:12,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:12,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:12,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:12,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-05-12 10:47:12,383 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:47:12,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:12,384 INFO L85 PathProgramCache]: Analyzing trace with hash 895459522, now seen corresponding path program 18 times [2024-05-12 10:47:12,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:12,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482391004] [2024-05-12 10:47:12,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:12,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:12,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:12,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482391004] [2024-05-12 10:47:12,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482391004] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:12,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:12,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:47:12,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072787896] [2024-05-12 10:47:12,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:12,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:47:12,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:12,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:47:12,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:47:12,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:47:12,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 622 transitions, 9312 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:12,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:12,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:47:12,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:14,695 INFO L124 PetriNetUnfolderBase]: 5178/8755 cut-off events. [2024-05-12 10:47:14,695 INFO L125 PetriNetUnfolderBase]: For 608966/609014 co-relation queries the response was YES. [2024-05-12 10:47:14,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55252 conditions, 8755 events. 5178/8755 cut-off events. For 608966/609014 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 64646 event pairs, 1538 based on Foata normal form. 13/8313 useless extension candidates. Maximal degree in co-relation 55054. Up to 7426 conditions per place. [2024-05-12 10:47:14,825 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 416 selfloop transitions, 214 changer transitions 0/644 dead transitions. [2024-05-12 10:47:14,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 644 transitions, 10897 flow [2024-05-12 10:47:14,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:47:14,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:47:14,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-05-12 10:47:14,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611702127659575 [2024-05-12 10:47:14,826 INFO L175 Difference]: Start difference. First operand has 491 places, 622 transitions, 9312 flow. Second operand 8 states and 211 transitions. [2024-05-12 10:47:14,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 644 transitions, 10897 flow [2024-05-12 10:47:17,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 644 transitions, 10369 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-05-12 10:47:17,562 INFO L231 Difference]: Finished difference. Result has 493 places, 625 transitions, 9263 flow [2024-05-12 10:47:17,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8784, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9263, PETRI_PLACES=493, PETRI_TRANSITIONS=625} [2024-05-12 10:47:17,562 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 442 predicate places. [2024-05-12 10:47:17,562 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 625 transitions, 9263 flow [2024-05-12 10:47:17,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:17,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:17,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:17,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-05-12 10:47:17,563 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:47:17,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:17,563 INFO L85 PathProgramCache]: Analyzing trace with hash -10483928, now seen corresponding path program 19 times [2024-05-12 10:47:17,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:17,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145059965] [2024-05-12 10:47:17,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:17,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:17,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:17,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:17,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145059965] [2024-05-12 10:47:17,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145059965] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:17,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:17,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:47:17,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596001683] [2024-05-12 10:47:17,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:17,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:47:17,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:17,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:47:17,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:47:17,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:47:17,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 625 transitions, 9263 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:17,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:17,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:47:17,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:19,779 INFO L124 PetriNetUnfolderBase]: 5185/8766 cut-off events. [2024-05-12 10:47:19,779 INFO L125 PetriNetUnfolderBase]: For 616138/616186 co-relation queries the response was YES. [2024-05-12 10:47:19,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55275 conditions, 8766 events. 5185/8766 cut-off events. For 616138/616186 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 64715 event pairs, 1538 based on Foata normal form. 13/8322 useless extension candidates. Maximal degree in co-relation 55077. Up to 7659 conditions per place. [2024-05-12 10:47:19,935 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 546 selfloop transitions, 89 changer transitions 0/649 dead transitions. [2024-05-12 10:47:19,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 649 transitions, 10638 flow [2024-05-12 10:47:19,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:47:19,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:47:19,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-05-12 10:47:19,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2024-05-12 10:47:19,936 INFO L175 Difference]: Start difference. First operand has 493 places, 625 transitions, 9263 flow. Second operand 8 states and 210 transitions. [2024-05-12 10:47:19,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 649 transitions, 10638 flow [2024-05-12 10:47:23,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 649 transitions, 10308 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-05-12 10:47:23,559 INFO L231 Difference]: Finished difference. Result has 496 places, 628 transitions, 9176 flow [2024-05-12 10:47:23,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8936, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9176, PETRI_PLACES=496, PETRI_TRANSITIONS=628} [2024-05-12 10:47:23,560 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 445 predicate places. [2024-05-12 10:47:23,560 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 628 transitions, 9176 flow [2024-05-12 10:47:23,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:23,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:23,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:23,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-05-12 10:47:23,560 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:47:23,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:23,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1051394724, now seen corresponding path program 14 times [2024-05-12 10:47:23,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:23,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736835307] [2024-05-12 10:47:23,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:23,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:23,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:23,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:23,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736835307] [2024-05-12 10:47:23,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736835307] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:23,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:23,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:47:23,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891433786] [2024-05-12 10:47:23,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:23,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:47:23,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:23,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:47:23,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:47:23,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:47:23,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 628 transitions, 9176 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:23,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:23,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:47:23,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:25,754 INFO L124 PetriNetUnfolderBase]: 5192/8777 cut-off events. [2024-05-12 10:47:25,755 INFO L125 PetriNetUnfolderBase]: For 625642/625690 co-relation queries the response was YES. [2024-05-12 10:47:25,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55075 conditions, 8777 events. 5192/8777 cut-off events. For 625642/625690 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 64891 event pairs, 1547 based on Foata normal form. 10/8328 useless extension candidates. Maximal degree in co-relation 54876. Up to 7519 conditions per place. [2024-05-12 10:47:25,897 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 466 selfloop transitions, 172 changer transitions 0/652 dead transitions. [2024-05-12 10:47:25,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 652 transitions, 11264 flow [2024-05-12 10:47:25,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:47:25,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:47:25,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-05-12 10:47:25,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5718085106382979 [2024-05-12 10:47:25,898 INFO L175 Difference]: Start difference. First operand has 496 places, 628 transitions, 9176 flow. Second operand 8 states and 215 transitions. [2024-05-12 10:47:25,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 652 transitions, 11264 flow [2024-05-12 10:47:29,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 652 transitions, 11064 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-05-12 10:47:29,063 INFO L231 Difference]: Finished difference. Result has 497 places, 631 transitions, 9374 flow [2024-05-12 10:47:29,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8976, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9374, PETRI_PLACES=497, PETRI_TRANSITIONS=631} [2024-05-12 10:47:29,063 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 446 predicate places. [2024-05-12 10:47:29,063 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 631 transitions, 9374 flow [2024-05-12 10:47:29,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:29,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:29,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:29,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-05-12 10:47:29,064 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:47:29,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:29,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1051780674, now seen corresponding path program 15 times [2024-05-12 10:47:29,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:29,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583974411] [2024-05-12 10:47:29,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:29,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:29,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:29,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:29,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583974411] [2024-05-12 10:47:29,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583974411] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:29,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:29,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:47:29,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922483335] [2024-05-12 10:47:29,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:29,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:47:29,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:29,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:47:29,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:47:29,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:47:29,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 631 transitions, 9374 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:29,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:29,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:47:29,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:31,375 INFO L124 PetriNetUnfolderBase]: 5189/8773 cut-off events. [2024-05-12 10:47:31,376 INFO L125 PetriNetUnfolderBase]: For 628696/628744 co-relation queries the response was YES. [2024-05-12 10:47:31,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55219 conditions, 8773 events. 5189/8773 cut-off events. For 628696/628744 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 64731 event pairs, 1547 based on Foata normal form. 10/8324 useless extension candidates. Maximal degree in co-relation 55020. Up to 7516 conditions per place. [2024-05-12 10:47:31,509 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 466 selfloop transitions, 171 changer transitions 0/651 dead transitions. [2024-05-12 10:47:31,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 651 transitions, 11176 flow [2024-05-12 10:47:31,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:47:31,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:47:31,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-05-12 10:47:31,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5718085106382979 [2024-05-12 10:47:31,510 INFO L175 Difference]: Start difference. First operand has 497 places, 631 transitions, 9374 flow. Second operand 8 states and 215 transitions. [2024-05-12 10:47:31,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 651 transitions, 11176 flow [2024-05-12 10:47:34,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 651 transitions, 10684 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-05-12 10:47:34,560 INFO L231 Difference]: Finished difference. Result has 499 places, 631 transitions, 9230 flow [2024-05-12 10:47:34,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8882, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9230, PETRI_PLACES=499, PETRI_TRANSITIONS=631} [2024-05-12 10:47:34,561 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 448 predicate places. [2024-05-12 10:47:34,561 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 631 transitions, 9230 flow [2024-05-12 10:47:34,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:34,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:34,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:34,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-05-12 10:47:34,561 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:47:34,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:34,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1051573470, now seen corresponding path program 20 times [2024-05-12 10:47:34,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:34,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996514263] [2024-05-12 10:47:34,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:34,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:34,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:34,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:34,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996514263] [2024-05-12 10:47:34,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996514263] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:34,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:34,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:47:34,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269800895] [2024-05-12 10:47:34,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:34,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:47:34,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:34,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:47:34,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:47:34,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:47:34,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 631 transitions, 9230 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:34,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:34,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:47:34,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:37,024 INFO L124 PetriNetUnfolderBase]: 5186/8769 cut-off events. [2024-05-12 10:47:37,024 INFO L125 PetriNetUnfolderBase]: For 629367/629415 co-relation queries the response was YES. [2024-05-12 10:47:37,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55071 conditions, 8769 events. 5186/8769 cut-off events. For 629367/629415 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 64718 event pairs, 1538 based on Foata normal form. 13/8323 useless extension candidates. Maximal degree in co-relation 54871. Up to 7650 conditions per place. [2024-05-12 10:47:37,155 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 541 selfloop transitions, 95 changer transitions 0/650 dead transitions. [2024-05-12 10:47:37,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 650 transitions, 10790 flow [2024-05-12 10:47:37,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:47:37,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:47:37,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-05-12 10:47:37,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2024-05-12 10:47:37,156 INFO L175 Difference]: Start difference. First operand has 499 places, 631 transitions, 9230 flow. Second operand 8 states and 210 transitions. [2024-05-12 10:47:37,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 650 transitions, 10790 flow [2024-05-12 10:47:40,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 650 transitions, 10448 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-05-12 10:47:40,061 INFO L231 Difference]: Finished difference. Result has 501 places, 631 transitions, 9084 flow [2024-05-12 10:47:40,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8888, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9084, PETRI_PLACES=501, PETRI_TRANSITIONS=631} [2024-05-12 10:47:40,061 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 450 predicate places. [2024-05-12 10:47:40,061 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 631 transitions, 9084 flow [2024-05-12 10:47:40,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:40,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:40,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:40,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-05-12 10:47:40,062 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:47:40,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:40,062 INFO L85 PathProgramCache]: Analyzing trace with hash 314257192, now seen corresponding path program 21 times [2024-05-12 10:47:40,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:40,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462626103] [2024-05-12 10:47:40,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:40,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:40,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:40,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:40,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462626103] [2024-05-12 10:47:40,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462626103] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:40,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:40,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:47:40,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518885162] [2024-05-12 10:47:40,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:40,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:47:40,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:40,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:47:40,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:47:40,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:47:40,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 631 transitions, 9084 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:40,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:40,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:47:40,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:42,281 INFO L124 PetriNetUnfolderBase]: 5183/8765 cut-off events. [2024-05-12 10:47:42,281 INFO L125 PetriNetUnfolderBase]: For 629753/629801 co-relation queries the response was YES. [2024-05-12 10:47:42,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54784 conditions, 8765 events. 5183/8765 cut-off events. For 629753/629801 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 64690 event pairs, 1538 based on Foata normal form. 13/8319 useless extension candidates. Maximal degree in co-relation 54583. Up to 7647 conditions per place. [2024-05-12 10:47:42,427 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 541 selfloop transitions, 96 changer transitions 0/651 dead transitions. [2024-05-12 10:47:42,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 651 transitions, 10406 flow [2024-05-12 10:47:42,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:47:42,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:47:42,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-05-12 10:47:42,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340425531914894 [2024-05-12 10:47:42,428 INFO L175 Difference]: Start difference. First operand has 501 places, 631 transitions, 9084 flow. Second operand 10 states and 251 transitions. [2024-05-12 10:47:42,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 651 transitions, 10406 flow [2024-05-12 10:47:45,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 651 transitions, 10179 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-05-12 10:47:45,462 INFO L231 Difference]: Finished difference. Result has 506 places, 631 transitions, 9055 flow [2024-05-12 10:47:45,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8857, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9055, PETRI_PLACES=506, PETRI_TRANSITIONS=631} [2024-05-12 10:47:45,462 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 455 predicate places. [2024-05-12 10:47:45,462 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 631 transitions, 9055 flow [2024-05-12 10:47:45,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:45,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:45,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:45,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-05-12 10:47:45,463 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:47:45,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:45,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1826087994, now seen corresponding path program 16 times [2024-05-12 10:47:45,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:45,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056662100] [2024-05-12 10:47:45,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:45,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:45,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:45,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056662100] [2024-05-12 10:47:45,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056662100] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:45,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:45,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:47:45,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366215154] [2024-05-12 10:47:45,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:45,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:47:45,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:45,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:47:45,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:47:45,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:47:45,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 631 transitions, 9055 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:45,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:45,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:47:45,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:47,713 INFO L124 PetriNetUnfolderBase]: 5216/8816 cut-off events. [2024-05-12 10:47:47,713 INFO L125 PetriNetUnfolderBase]: For 654919/654967 co-relation queries the response was YES. [2024-05-12 10:47:47,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55435 conditions, 8816 events. 5216/8816 cut-off events. For 654919/654967 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 65042 event pairs, 1547 based on Foata normal form. 10/8360 useless extension candidates. Maximal degree in co-relation 55233. Up to 7543 conditions per place. [2024-05-12 10:47:47,850 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 465 selfloop transitions, 182 changer transitions 0/661 dead transitions. [2024-05-12 10:47:47,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 661 transitions, 11347 flow [2024-05-12 10:47:47,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:47:47,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:47:47,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-05-12 10:47:47,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5664893617021277 [2024-05-12 10:47:47,851 INFO L175 Difference]: Start difference. First operand has 506 places, 631 transitions, 9055 flow. Second operand 8 states and 213 transitions. [2024-05-12 10:47:47,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 661 transitions, 11347 flow [2024-05-12 10:47:51,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 661 transitions, 11139 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-05-12 10:47:51,077 INFO L231 Difference]: Finished difference. Result has 506 places, 643 transitions, 9449 flow [2024-05-12 10:47:51,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8850, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9449, PETRI_PLACES=506, PETRI_TRANSITIONS=643} [2024-05-12 10:47:51,078 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 455 predicate places. [2024-05-12 10:47:51,078 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 643 transitions, 9449 flow [2024-05-12 10:47:51,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:51,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:51,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:51,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-05-12 10:47:51,079 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:47:51,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:51,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1344913856, now seen corresponding path program 22 times [2024-05-12 10:47:51,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:51,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382751753] [2024-05-12 10:47:51,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:51,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:51,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:51,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:51,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382751753] [2024-05-12 10:47:51,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382751753] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:51,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:51,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:47:51,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178464828] [2024-05-12 10:47:51,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:51,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:47:51,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:51,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:47:51,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:47:51,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:47:51,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 643 transitions, 9449 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:51,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:51,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:47:51,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:53,525 INFO L124 PetriNetUnfolderBase]: 5243/8857 cut-off events. [2024-05-12 10:47:53,525 INFO L125 PetriNetUnfolderBase]: For 682042/682090 co-relation queries the response was YES. [2024-05-12 10:47:53,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56312 conditions, 8857 events. 5243/8857 cut-off events. For 682042/682090 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 65387 event pairs, 1538 based on Foata normal form. 13/8398 useless extension candidates. Maximal degree in co-relation 56108. Up to 7689 conditions per place. [2024-05-12 10:47:53,662 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 525 selfloop transitions, 129 changer transitions 0/668 dead transitions. [2024-05-12 10:47:53,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 668 transitions, 11199 flow [2024-05-12 10:47:53,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:47:53,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:47:53,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-05-12 10:47:53,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.550531914893617 [2024-05-12 10:47:53,663 INFO L175 Difference]: Start difference. First operand has 506 places, 643 transitions, 9449 flow. Second operand 8 states and 207 transitions. [2024-05-12 10:47:53,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 668 transitions, 11199 flow [2024-05-12 10:47:56,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 668 transitions, 10917 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-05-12 10:47:56,841 INFO L231 Difference]: Finished difference. Result has 512 places, 652 transitions, 9651 flow [2024-05-12 10:47:56,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9167, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9651, PETRI_PLACES=512, PETRI_TRANSITIONS=652} [2024-05-12 10:47:56,841 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 461 predicate places. [2024-05-12 10:47:56,841 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 652 transitions, 9651 flow [2024-05-12 10:47:56,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:56,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:56,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:56,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-05-12 10:47:56,842 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:47:56,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:56,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1173138950, now seen corresponding path program 17 times [2024-05-12 10:47:56,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:56,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893675756] [2024-05-12 10:47:56,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:56,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:57,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:57,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:57,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893675756] [2024-05-12 10:47:57,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893675756] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:57,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:57,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:47:57,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70022863] [2024-05-12 10:47:57,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:57,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:47:57,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:57,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:47:57,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:47:57,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:47:57,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 652 transitions, 9651 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:57,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:57,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:47:57,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:59,369 INFO L124 PetriNetUnfolderBase]: 5240/8855 cut-off events. [2024-05-12 10:47:59,370 INFO L125 PetriNetUnfolderBase]: For 682684/682720 co-relation queries the response was YES. [2024-05-12 10:47:59,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56206 conditions, 8855 events. 5240/8855 cut-off events. For 682684/682720 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 65315 event pairs, 1520 based on Foata normal form. 1/8385 useless extension candidates. Maximal degree in co-relation 56000. Up to 7858 conditions per place. [2024-05-12 10:47:59,512 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 622 selfloop transitions, 31 changer transitions 0/667 dead transitions. [2024-05-12 10:47:59,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 667 transitions, 10993 flow [2024-05-12 10:47:59,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:47:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:47:59,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-05-12 10:47:59,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-05-12 10:47:59,514 INFO L175 Difference]: Start difference. First operand has 512 places, 652 transitions, 9651 flow. Second operand 8 states and 200 transitions. [2024-05-12 10:47:59,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 667 transitions, 10993 flow [2024-05-12 10:48:03,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 667 transitions, 10789 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-05-12 10:48:03,127 INFO L231 Difference]: Finished difference. Result has 516 places, 652 transitions, 9515 flow [2024-05-12 10:48:03,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9447, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9515, PETRI_PLACES=516, PETRI_TRANSITIONS=652} [2024-05-12 10:48:03,128 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 465 predicate places. [2024-05-12 10:48:03,128 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 652 transitions, 9515 flow [2024-05-12 10:48:03,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:03,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:03,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:03,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-05-12 10:48:03,128 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:48:03,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:03,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1479851400, now seen corresponding path program 23 times [2024-05-12 10:48:03,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:03,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272743859] [2024-05-12 10:48:03,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:03,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:03,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:03,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:03,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272743859] [2024-05-12 10:48:03,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272743859] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:03,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:03,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:48:03,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613209301] [2024-05-12 10:48:03,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:03,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:48:03,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:03,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:48:03,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:48:03,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:48:03,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 652 transitions, 9515 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:03,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:03,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:48:03,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:05,407 INFO L124 PetriNetUnfolderBase]: 5237/8849 cut-off events. [2024-05-12 10:48:05,407 INFO L125 PetriNetUnfolderBase]: For 685138/685186 co-relation queries the response was YES. [2024-05-12 10:48:05,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55812 conditions, 8849 events. 5237/8849 cut-off events. For 685138/685186 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 65345 event pairs, 1538 based on Foata normal form. 13/8390 useless extension candidates. Maximal degree in co-relation 55606. Up to 7682 conditions per place. [2024-05-12 10:48:05,560 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 526 selfloop transitions, 130 changer transitions 0/670 dead transitions. [2024-05-12 10:48:05,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 670 transitions, 11121 flow [2024-05-12 10:48:05,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:48:05,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:48:05,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-05-12 10:48:05,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2024-05-12 10:48:05,561 INFO L175 Difference]: Start difference. First operand has 516 places, 652 transitions, 9515 flow. Second operand 10 states and 252 transitions. [2024-05-12 10:48:05,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 670 transitions, 11121 flow [2024-05-12 10:48:09,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 670 transitions, 11057 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-05-12 10:48:09,708 INFO L231 Difference]: Finished difference. Result has 520 places, 652 transitions, 9717 flow [2024-05-12 10:48:09,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9451, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9717, PETRI_PLACES=520, PETRI_TRANSITIONS=652} [2024-05-12 10:48:09,708 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 469 predicate places. [2024-05-12 10:48:09,708 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 652 transitions, 9717 flow [2024-05-12 10:48:09,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:09,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:09,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:09,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-05-12 10:48:09,709 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:48:09,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:09,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1019936270, now seen corresponding path program 24 times [2024-05-12 10:48:09,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:09,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119335980] [2024-05-12 10:48:09,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:09,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:10,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:10,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119335980] [2024-05-12 10:48:10,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119335980] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:10,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:10,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:48:10,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090138518] [2024-05-12 10:48:10,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:10,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:48:10,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:10,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:48:10,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:48:10,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:48:10,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 652 transitions, 9717 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:10,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:10,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:48:10,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:12,161 INFO L124 PetriNetUnfolderBase]: 5234/8845 cut-off events. [2024-05-12 10:48:12,161 INFO L125 PetriNetUnfolderBase]: For 688218/688266 co-relation queries the response was YES. [2024-05-12 10:48:12,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55996 conditions, 8845 events. 5234/8845 cut-off events. For 688218/688266 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 65343 event pairs, 1538 based on Foata normal form. 13/8386 useless extension candidates. Maximal degree in co-relation 55789. Up to 7679 conditions per place. [2024-05-12 10:48:12,307 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 524 selfloop transitions, 132 changer transitions 0/670 dead transitions. [2024-05-12 10:48:12,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 670 transitions, 11071 flow [2024-05-12 10:48:12,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:48:12,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:48:12,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-05-12 10:48:12,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5203094777562862 [2024-05-12 10:48:12,308 INFO L175 Difference]: Start difference. First operand has 520 places, 652 transitions, 9717 flow. Second operand 11 states and 269 transitions. [2024-05-12 10:48:12,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 670 transitions, 11071 flow [2024-05-12 10:48:16,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 670 transitions, 10659 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-05-12 10:48:16,133 INFO L231 Difference]: Finished difference. Result has 521 places, 652 transitions, 9575 flow [2024-05-12 10:48:16,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9305, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9575, PETRI_PLACES=521, PETRI_TRANSITIONS=652} [2024-05-12 10:48:16,133 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 470 predicate places. [2024-05-12 10:48:16,133 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 652 transitions, 9575 flow [2024-05-12 10:48:16,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:16,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:16,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:16,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-05-12 10:48:16,134 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:48:16,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:16,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1019936456, now seen corresponding path program 18 times [2024-05-12 10:48:16,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:16,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836159454] [2024-05-12 10:48:16,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:16,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:16,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:16,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836159454] [2024-05-12 10:48:16,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836159454] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:16,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:16,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:48:16,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909262363] [2024-05-12 10:48:16,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:16,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:48:16,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:16,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:48:16,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:48:16,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:48:16,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 652 transitions, 9575 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:16,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:16,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:48:16,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:18,708 INFO L124 PetriNetUnfolderBase]: 5231/8841 cut-off events. [2024-05-12 10:48:18,708 INFO L125 PetriNetUnfolderBase]: For 688756/688804 co-relation queries the response was YES. [2024-05-12 10:48:18,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55773 conditions, 8841 events. 5231/8841 cut-off events. For 688756/688804 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 65304 event pairs, 1547 based on Foata normal form. 10/8379 useless extension candidates. Maximal degree in co-relation 55566. Up to 7564 conditions per place. [2024-05-12 10:48:18,843 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 471 selfloop transitions, 183 changer transitions 0/668 dead transitions. [2024-05-12 10:48:18,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 668 transitions, 11177 flow [2024-05-12 10:48:18,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:48:18,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:48:18,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-05-12 10:48:18,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2024-05-12 10:48:18,844 INFO L175 Difference]: Start difference. First operand has 521 places, 652 transitions, 9575 flow. Second operand 8 states and 210 transitions. [2024-05-12 10:48:18,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 668 transitions, 11177 flow [2024-05-12 10:48:22,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 668 transitions, 10885 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-05-12 10:48:22,420 INFO L231 Difference]: Finished difference. Result has 519 places, 652 transitions, 9655 flow [2024-05-12 10:48:22,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9283, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9655, PETRI_PLACES=519, PETRI_TRANSITIONS=652} [2024-05-12 10:48:22,421 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 468 predicate places. [2024-05-12 10:48:22,421 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 652 transitions, 9655 flow [2024-05-12 10:48:22,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:22,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:22,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:22,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-05-12 10:48:22,421 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:48:22,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:22,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1251483688, now seen corresponding path program 19 times [2024-05-12 10:48:22,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:22,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880120513] [2024-05-12 10:48:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:22,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:22,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:22,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880120513] [2024-05-12 10:48:22,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880120513] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:22,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:22,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:48:22,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589298299] [2024-05-12 10:48:22,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:22,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:48:22,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:22,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:48:22,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:48:22,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:48:22,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 652 transitions, 9655 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:22,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:22,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:48:22,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:24,778 INFO L124 PetriNetUnfolderBase]: 5238/8854 cut-off events. [2024-05-12 10:48:24,778 INFO L125 PetriNetUnfolderBase]: For 698053/698089 co-relation queries the response was YES. [2024-05-12 10:48:24,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56068 conditions, 8854 events. 5238/8854 cut-off events. For 698053/698089 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 65274 event pairs, 1520 based on Foata normal form. 1/8382 useless extension candidates. Maximal degree in co-relation 55860. Up to 7849 conditions per place. [2024-05-12 10:48:24,931 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 618 selfloop transitions, 37 changer transitions 0/669 dead transitions. [2024-05-12 10:48:24,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 669 transitions, 11064 flow [2024-05-12 10:48:24,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:48:24,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:48:24,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-05-12 10:48:24,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5440729483282675 [2024-05-12 10:48:24,932 INFO L175 Difference]: Start difference. First operand has 519 places, 652 transitions, 9655 flow. Second operand 7 states and 179 transitions. [2024-05-12 10:48:24,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 669 transitions, 11064 flow [2024-05-12 10:48:29,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 669 transitions, 10688 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 10:48:29,186 INFO L231 Difference]: Finished difference. Result has 519 places, 655 transitions, 9434 flow [2024-05-12 10:48:29,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9285, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9434, PETRI_PLACES=519, PETRI_TRANSITIONS=655} [2024-05-12 10:48:29,186 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 468 predicate places. [2024-05-12 10:48:29,186 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 655 transitions, 9434 flow [2024-05-12 10:48:29,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:29,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:29,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:29,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-05-12 10:48:29,186 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:48:29,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:29,187 INFO L85 PathProgramCache]: Analyzing trace with hash -450452270, now seen corresponding path program 25 times [2024-05-12 10:48:29,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:29,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360881245] [2024-05-12 10:48:29,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:29,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:29,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:29,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360881245] [2024-05-12 10:48:29,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360881245] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:29,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:29,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:48:29,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597528098] [2024-05-12 10:48:29,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:29,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:48:29,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:29,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:48:29,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:48:29,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:48:29,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 655 transitions, 9434 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:29,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:29,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:48:29,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:31,603 INFO L124 PetriNetUnfolderBase]: 5235/8855 cut-off events. [2024-05-12 10:48:31,603 INFO L125 PetriNetUnfolderBase]: For 697799/697851 co-relation queries the response was YES. [2024-05-12 10:48:31,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55594 conditions, 8855 events. 5235/8855 cut-off events. For 697799/697851 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 65401 event pairs, 1525 based on Foata normal form. 16/8399 useless extension candidates. Maximal degree in co-relation 55385. Up to 7540 conditions per place. [2024-05-12 10:48:31,760 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 485 selfloop transitions, 201 changer transitions 0/700 dead transitions. [2024-05-12 10:48:31,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 700 transitions, 11698 flow [2024-05-12 10:48:31,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:48:31,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:48:31,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 301 transitions. [2024-05-12 10:48:31,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5822050290135397 [2024-05-12 10:48:31,761 INFO L175 Difference]: Start difference. First operand has 519 places, 655 transitions, 9434 flow. Second operand 11 states and 301 transitions. [2024-05-12 10:48:31,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 700 transitions, 11698 flow [2024-05-12 10:48:36,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 700 transitions, 11580 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-05-12 10:48:36,209 INFO L231 Difference]: Finished difference. Result has 525 places, 655 transitions, 9746 flow [2024-05-12 10:48:36,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9322, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9746, PETRI_PLACES=525, PETRI_TRANSITIONS=655} [2024-05-12 10:48:36,209 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 474 predicate places. [2024-05-12 10:48:36,209 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 655 transitions, 9746 flow [2024-05-12 10:48:36,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:36,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:36,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:36,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-05-12 10:48:36,210 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:48:36,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:36,210 INFO L85 PathProgramCache]: Analyzing trace with hash 609124254, now seen corresponding path program 26 times [2024-05-12 10:48:36,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:36,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767525612] [2024-05-12 10:48:36,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:36,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:36,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:36,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767525612] [2024-05-12 10:48:36,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767525612] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:36,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:36,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:48:36,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080370497] [2024-05-12 10:48:36,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:36,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:48:36,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:36,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:48:36,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:48:36,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:48:36,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 655 transitions, 9746 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:36,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:36,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:48:36,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:39,057 INFO L124 PetriNetUnfolderBase]: 5232/8844 cut-off events. [2024-05-12 10:48:39,058 INFO L125 PetriNetUnfolderBase]: For 691816/691864 co-relation queries the response was YES. [2024-05-12 10:48:39,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55920 conditions, 8844 events. 5232/8844 cut-off events. For 691816/691864 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 65436 event pairs, 1538 based on Foata normal form. 13/8383 useless extension candidates. Maximal degree in co-relation 55711. Up to 7537 conditions per place. [2024-05-12 10:48:39,196 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 472 selfloop transitions, 193 changer transitions 0/679 dead transitions. [2024-05-12 10:48:39,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 679 transitions, 11396 flow [2024-05-12 10:48:39,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:48:39,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:48:39,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-05-12 10:48:39,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5957446808510638 [2024-05-12 10:48:39,197 INFO L175 Difference]: Start difference. First operand has 525 places, 655 transitions, 9746 flow. Second operand 7 states and 196 transitions. [2024-05-12 10:48:39,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 679 transitions, 11396 flow [2024-05-12 10:48:42,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 679 transitions, 10818 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-05-12 10:48:42,871 INFO L231 Difference]: Finished difference. Result has 520 places, 655 transitions, 9576 flow [2024-05-12 10:48:42,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9176, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9576, PETRI_PLACES=520, PETRI_TRANSITIONS=655} [2024-05-12 10:48:42,872 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 469 predicate places. [2024-05-12 10:48:42,872 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 655 transitions, 9576 flow [2024-05-12 10:48:42,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:42,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:42,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:42,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-05-12 10:48:42,872 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:48:42,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:42,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1074357208, now seen corresponding path program 20 times [2024-05-12 10:48:42,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:42,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522038438] [2024-05-12 10:48:42,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:42,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:43,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:43,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:43,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522038438] [2024-05-12 10:48:43,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522038438] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:43,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:43,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:48:43,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872860302] [2024-05-12 10:48:43,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:43,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:48:43,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:43,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:48:43,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:48:43,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:48:43,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 655 transitions, 9576 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:43,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:43,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:48:43,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:45,759 INFO L124 PetriNetUnfolderBase]: 5259/8885 cut-off events. [2024-05-12 10:48:45,760 INFO L125 PetriNetUnfolderBase]: For 678314/678350 co-relation queries the response was YES. [2024-05-12 10:48:45,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56162 conditions, 8885 events. 5259/8885 cut-off events. For 678314/678350 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 65528 event pairs, 1520 based on Foata normal form. 1/8407 useless extension candidates. Maximal degree in co-relation 55953. Up to 7709 conditions per place. [2024-05-12 10:48:45,918 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 551 selfloop transitions, 130 changer transitions 0/695 dead transitions. [2024-05-12 10:48:45,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 695 transitions, 11461 flow [2024-05-12 10:48:45,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:48:45,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:48:45,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 226 transitions. [2024-05-12 10:48:45,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.601063829787234 [2024-05-12 10:48:45,919 INFO L175 Difference]: Start difference. First operand has 520 places, 655 transitions, 9576 flow. Second operand 8 states and 226 transitions. [2024-05-12 10:48:45,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 695 transitions, 11461 flow [2024-05-12 10:48:49,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 695 transitions, 10969 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-05-12 10:48:49,813 INFO L231 Difference]: Finished difference. Result has 520 places, 664 transitions, 9641 flow [2024-05-12 10:48:49,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9088, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9641, PETRI_PLACES=520, PETRI_TRANSITIONS=664} [2024-05-12 10:48:49,813 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 469 predicate places. [2024-05-12 10:48:49,813 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 664 transitions, 9641 flow [2024-05-12 10:48:49,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:49,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:49,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:49,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-05-12 10:48:49,814 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:48:49,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:49,814 INFO L85 PathProgramCache]: Analyzing trace with hash -450244880, now seen corresponding path program 27 times [2024-05-12 10:48:49,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:49,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324654353] [2024-05-12 10:48:49,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:49,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:50,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:50,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324654353] [2024-05-12 10:48:50,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324654353] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:50,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:50,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:48:50,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717382169] [2024-05-12 10:48:50,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:50,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:48:50,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:50,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:48:50,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:48:50,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:48:50,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 664 transitions, 9641 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:50,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:50,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:48:50,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:52,703 INFO L124 PetriNetUnfolderBase]: 5256/8886 cut-off events. [2024-05-12 10:48:52,703 INFO L125 PetriNetUnfolderBase]: For 660463/660515 co-relation queries the response was YES. [2024-05-12 10:48:52,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55875 conditions, 8886 events. 5256/8886 cut-off events. For 660463/660515 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 65558 event pairs, 1525 based on Foata normal form. 16/8424 useless extension candidates. Maximal degree in co-relation 55665. Up to 7569 conditions per place. [2024-05-12 10:48:52,856 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 489 selfloop transitions, 197 changer transitions 0/700 dead transitions. [2024-05-12 10:48:52,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 700 transitions, 11607 flow [2024-05-12 10:48:52,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:48:52,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:48:52,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 250 transitions. [2024-05-12 10:48:52,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5910165484633569 [2024-05-12 10:48:52,873 INFO L175 Difference]: Start difference. First operand has 520 places, 664 transitions, 9641 flow. Second operand 9 states and 250 transitions. [2024-05-12 10:48:52,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 700 transitions, 11607 flow [2024-05-12 10:48:56,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 700 transitions, 11345 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-05-12 10:48:56,242 INFO L231 Difference]: Finished difference. Result has 522 places, 664 transitions, 9799 flow [2024-05-12 10:48:56,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9387, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9799, PETRI_PLACES=522, PETRI_TRANSITIONS=664} [2024-05-12 10:48:56,244 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 471 predicate places. [2024-05-12 10:48:56,245 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 664 transitions, 9799 flow [2024-05-12 10:48:56,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:56,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:56,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:56,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-05-12 10:48:56,245 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:48:56,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:56,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1679759104, now seen corresponding path program 28 times [2024-05-12 10:48:56,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:56,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849027942] [2024-05-12 10:48:56,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:56,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:56,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:56,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:56,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849027942] [2024-05-12 10:48:56,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849027942] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:56,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:56,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:48:56,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16118049] [2024-05-12 10:48:56,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:56,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:48:56,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:56,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:48:56,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:48:56,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:48:56,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 664 transitions, 9799 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:56,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:56,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:48:56,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:58,986 INFO L124 PetriNetUnfolderBase]: 5253/8875 cut-off events. [2024-05-12 10:48:58,986 INFO L125 PetriNetUnfolderBase]: For 645530/645578 co-relation queries the response was YES. [2024-05-12 10:48:59,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55845 conditions, 8875 events. 5253/8875 cut-off events. For 645530/645578 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 65531 event pairs, 1538 based on Foata normal form. 13/8408 useless extension candidates. Maximal degree in co-relation 55635. Up to 7566 conditions per place. [2024-05-12 10:48:59,147 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 486 selfloop transitions, 197 changer transitions 0/697 dead transitions. [2024-05-12 10:48:59,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 697 transitions, 11747 flow [2024-05-12 10:48:59,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:48:59,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:48:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 250 transitions. [2024-05-12 10:48:59,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5910165484633569 [2024-05-12 10:48:59,148 INFO L175 Difference]: Start difference. First operand has 522 places, 664 transitions, 9799 flow. Second operand 9 states and 250 transitions. [2024-05-12 10:48:59,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 697 transitions, 11747 flow [2024-05-12 10:49:02,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 697 transitions, 11305 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-05-12 10:49:02,552 INFO L231 Difference]: Finished difference. Result has 520 places, 664 transitions, 9781 flow [2024-05-12 10:49:02,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9369, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9781, PETRI_PLACES=520, PETRI_TRANSITIONS=664} [2024-05-12 10:49:02,552 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 469 predicate places. [2024-05-12 10:49:02,552 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 664 transitions, 9781 flow [2024-05-12 10:49:02,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:02,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:02,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:02,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-05-12 10:49:02,553 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:49:02,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:02,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1589540764, now seen corresponding path program 21 times [2024-05-12 10:49:02,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:02,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687025746] [2024-05-12 10:49:02,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:02,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:02,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:02,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:02,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687025746] [2024-05-12 10:49:02,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687025746] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:02,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:02,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:49:02,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376503644] [2024-05-12 10:49:02,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:02,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:49:02,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:02,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:49:02,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:49:03,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:49:03,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 664 transitions, 9781 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:03,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:03,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:49:03,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:05,187 INFO L124 PetriNetUnfolderBase]: 5260/8893 cut-off events. [2024-05-12 10:49:05,187 INFO L125 PetriNetUnfolderBase]: For 627009/627061 co-relation queries the response was YES. [2024-05-12 10:49:05,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55772 conditions, 8893 events. 5260/8893 cut-off events. For 627009/627061 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 65639 event pairs, 1529 based on Foata normal form. 13/8426 useless extension candidates. Maximal degree in co-relation 55564. Up to 7594 conditions per place. [2024-05-12 10:49:05,336 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 473 selfloop transitions, 206 changer transitions 0/693 dead transitions. [2024-05-12 10:49:05,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 693 transitions, 12006 flow [2024-05-12 10:49:05,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:49:05,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:49:05,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-05-12 10:49:05,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6048632218844985 [2024-05-12 10:49:05,337 INFO L175 Difference]: Start difference. First operand has 520 places, 664 transitions, 9781 flow. Second operand 7 states and 199 transitions. [2024-05-12 10:49:05,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 693 transitions, 12006 flow [2024-05-12 10:49:09,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 693 transitions, 11528 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-05-12 10:49:09,748 INFO L231 Difference]: Finished difference. Result has 515 places, 667 transitions, 9816 flow [2024-05-12 10:49:09,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9321, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9816, PETRI_PLACES=515, PETRI_TRANSITIONS=667} [2024-05-12 10:49:09,749 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 464 predicate places. [2024-05-12 10:49:09,749 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 667 transitions, 9816 flow [2024-05-12 10:49:09,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:09,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:09,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:09,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-05-12 10:49:09,750 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:49:09,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:09,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1589926714, now seen corresponding path program 22 times [2024-05-12 10:49:09,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:09,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948252192] [2024-05-12 10:49:09,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:09,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:10,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:10,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948252192] [2024-05-12 10:49:10,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948252192] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:10,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:10,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:49:10,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517398914] [2024-05-12 10:49:10,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:10,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:49:10,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:10,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:49:10,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:49:10,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:49:10,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 667 transitions, 9816 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:10,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:10,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:49:10,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:12,356 INFO L124 PetriNetUnfolderBase]: 5277/8919 cut-off events. [2024-05-12 10:49:12,356 INFO L125 PetriNetUnfolderBase]: For 617745/617797 co-relation queries the response was YES. [2024-05-12 10:49:12,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55955 conditions, 8919 events. 5277/8919 cut-off events. For 617745/617797 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 65930 event pairs, 1529 based on Foata normal form. 13/8448 useless extension candidates. Maximal degree in co-relation 55749. Up to 7613 conditions per place. [2024-05-12 10:49:12,497 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 470 selfloop transitions, 212 changer transitions 0/696 dead transitions. [2024-05-12 10:49:12,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 696 transitions, 12112 flow [2024-05-12 10:49:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:49:12,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:49:12,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-05-12 10:49:12,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5927051671732523 [2024-05-12 10:49:12,498 INFO L175 Difference]: Start difference. First operand has 515 places, 667 transitions, 9816 flow. Second operand 7 states and 195 transitions. [2024-05-12 10:49:12,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 696 transitions, 12112 flow [2024-05-12 10:49:16,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 696 transitions, 11674 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-05-12 10:49:16,431 INFO L231 Difference]: Finished difference. Result has 515 places, 673 transitions, 9984 flow [2024-05-12 10:49:16,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9405, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9984, PETRI_PLACES=515, PETRI_TRANSITIONS=673} [2024-05-12 10:49:16,431 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 464 predicate places. [2024-05-12 10:49:16,431 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 673 transitions, 9984 flow [2024-05-12 10:49:16,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:16,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:16,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:16,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-05-12 10:49:16,432 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:49:16,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:16,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1247517904, now seen corresponding path program 23 times [2024-05-12 10:49:16,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:16,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65185495] [2024-05-12 10:49:16,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:16,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:16,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:16,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:16,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65185495] [2024-05-12 10:49:16,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65185495] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:16,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:16,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:49:16,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059234627] [2024-05-12 10:49:16,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:16,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:49:16,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:16,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:49:16,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:49:16,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:49:16,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 673 transitions, 9984 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:16,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:16,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:49:16,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:18,935 INFO L124 PetriNetUnfolderBase]: 5284/8923 cut-off events. [2024-05-12 10:49:18,935 INFO L125 PetriNetUnfolderBase]: For 601875/601923 co-relation queries the response was YES. [2024-05-12 10:49:19,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55878 conditions, 8923 events. 5284/8923 cut-off events. For 601875/601923 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 65937 event pairs, 1547 based on Foata normal form. 10/8445 useless extension candidates. Maximal degree in co-relation 55674. Up to 7621 conditions per place. [2024-05-12 10:49:19,279 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 470 selfloop transitions, 211 changer transitions 0/695 dead transitions. [2024-05-12 10:49:19,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 695 transitions, 11939 flow [2024-05-12 10:49:19,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:49:19,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:49:19,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-05-12 10:49:19,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5835866261398176 [2024-05-12 10:49:19,280 INFO L175 Difference]: Start difference. First operand has 515 places, 673 transitions, 9984 flow. Second operand 7 states and 192 transitions. [2024-05-12 10:49:19,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 695 transitions, 11939 flow [2024-05-12 10:49:22,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 695 transitions, 11573 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-05-12 10:49:22,830 INFO L231 Difference]: Finished difference. Result has 517 places, 676 transitions, 10133 flow [2024-05-12 10:49:22,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9632, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10133, PETRI_PLACES=517, PETRI_TRANSITIONS=676} [2024-05-12 10:49:22,831 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 466 predicate places. [2024-05-12 10:49:22,831 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 676 transitions, 10133 flow [2024-05-12 10:49:22,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:22,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:22,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:22,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-05-12 10:49:22,832 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:49:22,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:22,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1679966308, now seen corresponding path program 24 times [2024-05-12 10:49:22,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:22,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921776105] [2024-05-12 10:49:22,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:22,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:23,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:23,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921776105] [2024-05-12 10:49:23,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921776105] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:23,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:23,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:49:23,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662535430] [2024-05-12 10:49:23,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:23,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:49:23,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:23,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:49:23,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:49:23,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:49:23,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 676 transitions, 10133 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:23,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:23,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:49:23,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:25,360 INFO L124 PetriNetUnfolderBase]: 5281/8919 cut-off events. [2024-05-12 10:49:25,360 INFO L125 PetriNetUnfolderBase]: For 586798/586846 co-relation queries the response was YES. [2024-05-12 10:49:25,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55636 conditions, 8919 events. 5281/8919 cut-off events. For 586798/586846 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 65831 event pairs, 1547 based on Foata normal form. 10/8441 useless extension candidates. Maximal degree in co-relation 55433. Up to 7618 conditions per place. [2024-05-12 10:49:25,512 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 468 selfloop transitions, 215 changer transitions 0/697 dead transitions. [2024-05-12 10:49:25,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 697 transitions, 11787 flow [2024-05-12 10:49:25,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:49:25,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:49:25,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-05-12 10:49:25,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5896656534954408 [2024-05-12 10:49:25,513 INFO L175 Difference]: Start difference. First operand has 517 places, 676 transitions, 10133 flow. Second operand 7 states and 194 transitions. [2024-05-12 10:49:25,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 697 transitions, 11787 flow [2024-05-12 10:49:28,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 697 transitions, 11317 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-05-12 10:49:28,950 INFO L231 Difference]: Finished difference. Result has 518 places, 676 transitions, 10115 flow [2024-05-12 10:49:28,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9667, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10115, PETRI_PLACES=518, PETRI_TRANSITIONS=676} [2024-05-12 10:49:28,950 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 467 predicate places. [2024-05-12 10:49:28,950 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 676 transitions, 10115 flow [2024-05-12 10:49:28,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:28,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:28,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:28,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-05-12 10:49:28,950 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:49:28,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:28,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1679966494, now seen corresponding path program 29 times [2024-05-12 10:49:28,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:28,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016227579] [2024-05-12 10:49:28,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:28,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:29,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:29,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016227579] [2024-05-12 10:49:29,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016227579] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:29,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:29,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:49:29,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004809986] [2024-05-12 10:49:29,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:29,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:49:29,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:29,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:49:29,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:49:29,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:49:29,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 676 transitions, 10115 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:29,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:29,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:49:29,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:31,429 INFO L124 PetriNetUnfolderBase]: 5278/8915 cut-off events. [2024-05-12 10:49:31,429 INFO L125 PetriNetUnfolderBase]: For 571099/571147 co-relation queries the response was YES. [2024-05-12 10:49:31,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55372 conditions, 8915 events. 5278/8915 cut-off events. For 571099/571147 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 65815 event pairs, 1538 based on Foata normal form. 13/8440 useless extension candidates. Maximal degree in co-relation 55170. Up to 7599 conditions per place. [2024-05-12 10:49:31,557 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 494 selfloop transitions, 204 changer transitions 0/712 dead transitions. [2024-05-12 10:49:31,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 712 transitions, 11835 flow [2024-05-12 10:49:31,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:49:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:49:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2024-05-12 10:49:31,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5765957446808511 [2024-05-12 10:49:31,558 INFO L175 Difference]: Start difference. First operand has 518 places, 676 transitions, 10115 flow. Second operand 10 states and 271 transitions. [2024-05-12 10:49:31,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 712 transitions, 11835 flow [2024-05-12 10:49:34,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 712 transitions, 11351 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-05-12 10:49:34,981 INFO L231 Difference]: Finished difference. Result has 519 places, 676 transitions, 10067 flow [2024-05-12 10:49:34,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9637, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10067, PETRI_PLACES=519, PETRI_TRANSITIONS=676} [2024-05-12 10:49:34,982 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 468 predicate places. [2024-05-12 10:49:34,982 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 676 transitions, 10067 flow [2024-05-12 10:49:34,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:34,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:34,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:34,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-05-12 10:49:34,982 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:49:34,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:34,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1817827864, now seen corresponding path program 25 times [2024-05-12 10:49:34,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:34,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793491260] [2024-05-12 10:49:34,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:34,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:35,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:35,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:35,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793491260] [2024-05-12 10:49:35,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793491260] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:35,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:35,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:49:35,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380135578] [2024-05-12 10:49:35,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:35,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:49:35,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:35,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:49:35,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:49:35,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:49:35,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 676 transitions, 10067 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:35,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:35,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:49:35,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:37,630 INFO L124 PetriNetUnfolderBase]: 5275/8918 cut-off events. [2024-05-12 10:49:37,631 INFO L125 PetriNetUnfolderBase]: For 545975/546027 co-relation queries the response was YES. [2024-05-12 10:49:37,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55080 conditions, 8918 events. 5275/8918 cut-off events. For 545975/546027 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 65832 event pairs, 1529 based on Foata normal form. 13/8445 useless extension candidates. Maximal degree in co-relation 54880. Up to 7611 conditions per place. [2024-05-12 10:49:37,776 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 465 selfloop transitions, 217 changer transitions 0/696 dead transitions. [2024-05-12 10:49:37,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 696 transitions, 12169 flow [2024-05-12 10:49:37,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:49:37,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:49:37,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-05-12 10:49:37,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5805471124620061 [2024-05-12 10:49:37,777 INFO L175 Difference]: Start difference. First operand has 519 places, 676 transitions, 10067 flow. Second operand 7 states and 191 transitions. [2024-05-12 10:49:37,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 696 transitions, 12169 flow [2024-05-12 10:49:41,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 696 transitions, 11713 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-05-12 10:49:41,051 INFO L231 Difference]: Finished difference. Result has 513 places, 676 transitions, 10079 flow [2024-05-12 10:49:41,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9635, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10079, PETRI_PLACES=513, PETRI_TRANSITIONS=676} [2024-05-12 10:49:41,052 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 462 predicate places. [2024-05-12 10:49:41,052 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 676 transitions, 10079 flow [2024-05-12 10:49:41,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:41,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:41,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:41,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-05-12 10:49:41,052 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:49:41,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:41,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1175871890, now seen corresponding path program 26 times [2024-05-12 10:49:41,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:41,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126955492] [2024-05-12 10:49:41,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:41,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:41,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:41,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:41,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126955492] [2024-05-12 10:49:41,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126955492] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:41,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:41,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:49:41,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513102987] [2024-05-12 10:49:41,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:41,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:49:41,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:41,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:49:41,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:49:41,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:49:41,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 676 transitions, 10079 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:41,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:41,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:49:41,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:43,484 INFO L124 PetriNetUnfolderBase]: 5272/8914 cut-off events. [2024-05-12 10:49:43,484 INFO L125 PetriNetUnfolderBase]: For 516343/516395 co-relation queries the response was YES. [2024-05-12 10:49:43,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54690 conditions, 8914 events. 5272/8914 cut-off events. For 516343/516395 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 65859 event pairs, 1529 based on Foata normal form. 13/8441 useless extension candidates. Maximal degree in co-relation 54493. Up to 7726 conditions per place. [2024-05-12 10:49:43,640 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 560 selfloop transitions, 125 changer transitions 0/699 dead transitions. [2024-05-12 10:49:43,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 699 transitions, 11731 flow [2024-05-12 10:49:43,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:49:43,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:49:43,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-05-12 10:49:43,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624113475177305 [2024-05-12 10:49:43,641 INFO L175 Difference]: Start difference. First operand has 513 places, 676 transitions, 10079 flow. Second operand 6 states and 176 transitions. [2024-05-12 10:49:43,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 699 transitions, 11731 flow [2024-05-12 10:49:46,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 699 transitions, 11115 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-05-12 10:49:46,497 INFO L231 Difference]: Finished difference. Result has 512 places, 676 transitions, 9739 flow [2024-05-12 10:49:46,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9465, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9739, PETRI_PLACES=512, PETRI_TRANSITIONS=676} [2024-05-12 10:49:46,497 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 461 predicate places. [2024-05-12 10:49:46,497 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 676 transitions, 9739 flow [2024-05-12 10:49:46,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:46,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:46,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:46,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-05-12 10:49:46,498 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:49:46,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:46,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1176049520, now seen corresponding path program 27 times [2024-05-12 10:49:46,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:46,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691312494] [2024-05-12 10:49:46,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:46,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:47,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:47,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:47,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691312494] [2024-05-12 10:49:47,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691312494] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:47,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:47,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:49:47,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884847205] [2024-05-12 10:49:47,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:47,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:49:47,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:47,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:49:47,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:49:47,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-05-12 10:49:47,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 676 transitions, 9739 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:47,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:47,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-05-12 10:49:47,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand